Represents the reduction to interest expense related to the accretion of the net gains. Accretion of Deferred Hedge Gains Reduction to interest expense related to the accretion of the net gains Estimated interest due on reissued bonds Accrual of Interest on Reissued Collateralized Debt Obligations Represents the noncash investing and financing activities in relation to reissuance of CDO debt of the reporting entity. Estimated interest due through maturity Schedule of composition of loan and investment portfolio Investment [Table Text Block] Accumulated Depreciation and Amortization Building Real Estate Owned Building, accumulated depreciation Represents the cumulative amount of depreciation related to building of real estate owned. Accumulated Depreciation and Amortization Buildings and Intangible Assets Real Estate Owned Building and intangible asset, accumulated depreciation and amortization Represents the cumulative amount of depreciation and amortization related to building and intangible asset of real estate owned. Cumulative amount of other comprehensive loss related to net unrealized losses on derivatives designated as cash flow hedges attributable to fair value of qualifying cash flow hedges Accumulated change in accumulated gains and losses related to the change in fair value of derivative instruments designated and qualifying as the effective portion of cash flow hedges, net of tax. Accumulated Other Comprehensive Income (Loss) Cumulative Changes in Fair Value of Cash Flow Hedges, Net of Tax Accumulated Other Comprehensive Income (Loss) Deferred Hedge Gains, Net of Tax Cumulative amount of other comprehensive loss related to net unrealized losses on derivatives designated as cash flow hedges attributable to deferred gains on terminated interest swaps After tax net amount of deferred hedged gains on terminated swaps that are recognized as increases (decreases) in other comprehensive income. Cumulative amount of other comprehensive loss related to net unrealized losses on derivatives designated as cash flow hedges attributable to deferred losses terminated interest swaps After tax net amount of deferred hedged losses on terminated swaps that are recognized as increases (decreases) in other comprehensive income. Accumulated Other Comprehensive Income (Loss) Deferred Hedge Losses, Net of Tax Accumulated Other Comprehensive Income (Loss) Net, Deferred Hedge Gains (Losses) Net of Tax Net deferred loss in accumulated other comprehensive loss After tax net amount of deferred hedged gains (losses) on terminated swaps that are recognized as increases (decreases) in other comprehensive income. Acquisition of Tangible Assets Through Restructure of Loan Represents the value of tangible assets acquired through the restructure of loans in noncash investing or financing transactions. Acquisition of tangible asset through restructure of loan Additional shares for which an over-allotment option was granted to the underwriter Represents the number of additional shares for which an over-allotment option was granted to the underwriter. Additional Shares for which Over Allotment Option was Granted to Underwriter Amendment Description Amortization and accretion of interest, fees and intangible assets, net Adjustment for Amortization and Accretion of Interest and Fees Represents the adjustment for amortization and accretion of interest and fees during the period by the reporting entity. Amendment Flag Affiliate Entities [Member] Affiliate entities Represents information pertaining to the affiliate entities. Affiliate of Mr. Ivan Kaufman [Member] Affiliate of Mr. Ivan Kaufman Represents information pertaining to an affiliate of Mr. Ivan Kaufman. Affiliated entity of Mr. Ivan Kaufman Amount of outstanding principal on mortgage loans due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Affiliates Debt Instrument Principal Outstanding Unpaid Principal Balance of Loans to Equity Affiliates Investment [Axis] Charge-off on loans converted to real estate owned, net Allowance for Loan and Lease Losses Charge Offs Reclassification Real Estate Owned Reflects the amount of loans and leases that have been removed or charged-off, from both loan receivables and the reserve for credit losses due to reclassification to real estate owned. Charged-off loan loss reserves on loans reclassified to real estate owned, net California CALIFORNIA Investment [Domain] Represents the ratio of net charge-offs during the period to average loans and investments outstanding during the period. Allowance for Loan and Lease Losses Net Charge Offs Ratio Ratio of net charge-offs during the period to average loans and investments outstanding during the period Allowance for Loan and Lease Losses Provision for Loss Gross Loans Not Previously Impaired The portion of the gross provision for loan and lease losses (before recoveries) that relates to items that have not previously been reserved for impairment. Loans without previous reserves The portion of the gross provision for loan and lease losses (before recoveries) that relates to items that were previously reserved for impairment. Loans with previous reserves Allowance for Loan and Lease Losses Provision for Loss Gross Loans Previously Impaired Charge-offs Charge-offs to previously recorded reserves Allowance for Loan and Lease Losses Total Charge Offs Reflects the total amount of loans and leases that have been removed or charged-off, from both loan receivables and the reserve for credit losses. Reflects the total amount of loans and leases that have been removed or charged-off, from both loan receivables and the reserve for credit losses, net of total recoveries for the period. Net Charge-offs Allowance for Loan and Lease Losses Total Charge Offs Net Recoveries Allowance for Loan Loss, Charge Offs Reflects the amount of loans and leases that have been removed or charged-off, from both loan receivables and the reserve for credit losses when the loan has been repaid, forgiven or sold. Charge-offs Florida FLORIDA Area of property Area of Real Estate Property The amount of additions to mortgage loans due to loan charge-offs during the reporting period. Loan charge-offs Allowance For Loan Loss Total Charge-offs Represents the amount of federal alternative minimum tax recorded during the reporting period. Alternative Minimum Tax Federal Alternative minimum tax Management fees to be remitted Amount Due to Related Parties to be Remitted in Next Quarter Represents the amount of obligations due to related parties which will be remitted in the next quarter. Amount of New Debt Guaranteed Amount of new debt guaranteed Represents the amount of new debt guaranteed. Arbor Commercial Mortgage LLC [Member] ACM Represents the information pertaining to Arbor Commercial Mortgage, LLC (ACM). Apartment building Apartment Building [Member] Represents the information pertaining to Arbor ESH II, LLC. Arbor ESH II LLC [Member] Arbor ESH II, LLC Current Fiscal Year End Date Award Type [Axis] Arbor Realty Limited Partnership [Member] ARLP Represents the information pertaining to Arbor Realty Limited Partnership (ARLP). Fixed interest rate (as a percent) Investment Interest Rate Assets Pledged as Collateral Assets serving as collateral Represents information pertaining to the amount of assets, which serve as a collateral. Available Amount to Fund Unfunded Commitments Available amount to fund unfunded commitments Represents the amount of restricted cash balance and CDO III revolver capacity available to fund the portion of the unfunded commitments for loans financed by the entity's CDO vehicles. Collateral Securities, Carrying Value Available For Sale Securities Carrying Value Represents the carrying value of available-for-sale securities that serve as collateral. Tabular disclosure of available-for-sale securities by credit quality indicator. The credit quality indicator is a statistic about the credit quality of available-for-sale securities. Examples include, but are not limited to, consumer credit risk scores, credit-rating-agency ratings, the entity's internal credit risk grades and other internal metrics. Summary of the underlying credit rating of the Company's available-for-sale securities Available For Sale Securities Credit Quality Indicators [Table Text Block] Available For Sale Securities, Face Value Face Value Represents the face value of available-for-sale securities that serve as collateral. Collateral Securities, Face Value Number of securities Represents the number of available-for-sale securities held by the entity. Available For Sale Securities, Number Percent of Total Represents the available-for-sale securities expressed as a percentage. Available For Sale Securities, Percentage Represents the interest rate swap contracts where both rates are variable but are tied to different index rates and contracts in which the cap writer, in return for a premium, agrees to limit or cap the cap holder's risk associated with an increase in interest rates. Basis Swaps / Caps Basis Swaps and Caps [Member] Represents information pertaining to a bridge loan and a preferred equity loan of the entity. Bridge loan and a preferred equity loan Bridge Loan and Preferred Equity Loan [Member] Bridge Loan Mezzanine Loan and Junior Participation Loan [Member] Bridge loan, mezzanine loans, and a preferred equity loan Represents information pertaining to a bridge loan, mezzanine loans and a preferred equity loan of the entity. Document Period End Date Represents information pertaining to bridge loans, a mezzanine loan and a preferred equity investment of the entity. Bridge Loans Mezzanine Loan and Preferred Equity Investment [Member] Bridge loans, a mezzanine loan and a preferred equity investment Broker quotes Broker quotes valuation technique used to measure fair value. Broker Quotes [Member] Buildings and Intangible Assets Net Real Estate Owned Building and intangible asset, net of accumulated depreciation and amortization Represents the building and intangible asset, net of accumulated depreciation and amortization, of real estate owned. Buildings Net Real Estate Owned Represents buildings of real estate owned. Buildings, net of accumulated depreciation Business Description and Form of Ownership [Line Items] Description of Business Chetrit Group LLC [Member] Chetrit Group L.L.C. Represents information pertaining to Chetrit Group L.L.C. Class of Warrant Exercisable after 2010 July, 23 [Member] Warrants exercisable after July 23, 2010 Represents the class of warrants which are exercisable after July 23, 2010. Class of Warrant Exercisable after 2011 July, 23 [Member] Warrants exercisable after July 23, 2011 Represents the class of warrants which are exercisable after July 23, 2011. New York NEW YORK Class of Warrant Exercisable Immediately [Member] Warrants exercisable immediately Represents the class of warrants which are exercisable immediately. Entity [Domain] Classification of Dividend for Tax Purpose [Domain] Classification of dividend for tax purposes. Collateral Carrying Value Collateral Carrying Value, Total repurchase agreements and credit facilities Collateral Carrying Value The balance represents the carrying value of loans and securities held as collateral. Collateralized Debt, Obligation Bonds, Fair Value Disclosure CDO Bonds Represents the fair value of securities collateralized by a pool of assets. Collateralized Debt Obligations and Collateralized Loan Obligations [Member] Collateralized debt obligations and collateralized loan obligations Securities collateralized by a pool of assets and loans. Collateralized Debt Obligations Class B and E Notes [Member] Class B and E Represents the information pertaining to investment grade rated class B and E notes issued by the CDO issuing entity. Collateralized Debt Obligations Class B C D E F G and H Notes [Member] Class B, C, D, E, F, G and H Represents the information pertaining to investment grade rated class B, C, D, E, F, G and H notes issued by the CDO issuing entity. Collateralized Debt Obligations, Class B Notes [Member] Class B Represents the information pertaining to investment grade rated class B notes issued by the CDO issuing entity. Collateralized Debt Obligations, Class D Notes [Member] Class D Represents the information pertaining to investment grade rated class D notes issued by the CDO issuing entity. Texas TEXAS Collateralized Debt Obligations, Class E Notes [Member] Class E Represents the information pertaining to investment grade rated class E notes issued by the CDO issuing entity. Collateralized Debt Obligations, Class G Notes [Member] Class G Represents the information pertaining to investment grade rated class G notes issued by the CDO issuing entity. Collateralized Debt Obligations Class H Notes [Member] Class H Represents the information pertaining to investment grade rated class H notes issued by the CDO issuing entity. CDO I - Issued four investment grade tranches January 19, 2005. Reinvestment period through April 2009. Stated maturity date of February 2040. Interest is variable based on three-month LIBOR; the weighted average note rate was 3.12% and 3.28% at September 30, 2013 and December 31, 2012 respectively CDO I Collateralized Debt Obligations One [Member] CDO I debt Represents the information pertaining to securities collateralized by a pool of assets and whose reinvestment period is through April 2009, stated maturity date of February 2040, interest is variable based on three-month LIBOR. Collateralized Debt Obligations, Revolving Note Facility [Member] Revolving note facility Represents the information pertaining to revolving note facility provided under CDO III. Collateralized Debt Obligations Revolving Note [Member] Revolving note class Represents the information pertaining to revolving note class that provides revolving note facility under CDO III. Represents the information pertaining to investment grade rated class C notes issued by the CDO III issuing entity. Collateralized Debt Obligations, Three Class C Notes [Member] Class C Class F Represents the information pertaining to investment grade rated class F notes issued by the CDO III issuing entity. Collateralized Debt Obligations, Three Class F Notes [Member] Collateralized Debt Obligations Three [Member] CDO III debt Represents the information pertaining to securities collateralized by a pool of assets and whose reinvestment period is through January 2012, stated maturity date of January 2042, interest is variable based on three-month LIBOR. CDO III - Issued ten investment grade tranches December 14, 2006. Reinvestment period through January 2012. Stated maturity date of January 2042. Interest is variable based on three-month LIBOR; the weighted average note rate was 0.74% and 0.68% at September 30, 2013 and December 31, 2012 respectively CDO III CDO II debt Represents the information pertaining to securities collateralized by a pool of assets and whose reinvestment period is through April 2011, stated maturity date of April 2038, interest is variable based on three-month LIBOR. CDO II - Issued nine investment grade tranches January 11, 2006. Reinvestment period through April 2011. Stated maturity date of April 2038. Interest is variable based on three-month LIBOR; the weighted average note rate was 3.29% and 3.24% at September 30, 2013 and December 31, 2012 respectively CDO II Collateralized Debt Obligations Two [Member] All States and Provinces [Domain] Represents the face value of collateral in default, as defined by the CDO indenture, as well as assets deemed to be a credit risk. Credit risk assets are reported by each of the CDOs and are generally defined as the one that, in the CDO collateral manager's reasonable business judgment, has a significant risk of declining in credit quality or, with a passage of time, becoming a defaulted asset. Collateralized Loan Obligation, Collateral at Risk Collateral-At-Risk Collateralized loan obligations Collateralized Loan Obligations Collateralized loan obligations (includes $264,500,000 and $264,500,000 from consolidated VIEs, respectively) Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized loan obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. Collateralized loan obligation Class A senior secured floating rate notes Represents information pertaining to investment grade rated Class A senior secured floating rate notes issued by the CLO issuing entity. Collateralized Loan Obligations Class A Senior Secured Floating Rate Notes [Member] Class B secured floating rate notes Represents information pertaining to investment grade rated Class B secured floating rate notes issued by the CLO issuing entity. Collateralized Loan Obligations Class B Secured Floating Rate Notes [Member] Collateralized Loan Obligations One [Member] CLO I - Issued two investment grade tranches September 24, 2012. Replacement period through September 2014. Stated maturity date of October 2022. Interest is variable based on three-month LIBOR; the weighted average note rate was 3.64% and 3.65% at September 30, 2013 and December 31, 2012 respectively Represents information pertaining to securities collateralized by a pool of assets and whose replacement period is through September 2014, stated maturity date of October 2022 and interest is variable based on three-month LIBOR. CLO I Represents information pertaining to securities collateralized by a pool of assets and which has two-year replacement period, stated maturity date of February 15, 2023 and interest is variable based on one-month LIBOR. CLO II - Issued two investment grade tranches January 28, 2013. Replacement period through January 2015. Stated maturity date of February 2023. Interest is variable based on three-month LIBOR; the weighted average note rate was 2.59% Collateralized Loan Obligations Two [Member] CLO II Commercial Mortgage Backed Securities, Fair Value Disclosure CMBS Represents the fair value of securities collateralized by commercial real estate mortgage loans. Common Stock Dividend Rate Percentage Percentage rate used to calculate dividends payments on common stock The percentage rate used to calculate dividend payments on common stock. Comparable sales and discounted cash flows Represents the comparable sales and discounted cash flows valuation techniques used to measure fair value. Comparable Sales and Discounted Cash Flows [Member] Compensating Balance by Entity and Affiliates, Covenant Compliance Required compensating balance to be maintained by the entity and its affiliates Represents the compensating balance required to be maintained according to covenants related to credit facility. Concentration Credit Internal Risk Rating Wtd. Avg. Internal Risk Rating Represents the individual ratings assigned to credit risk during the loan valuation and risk assessment process. Contractual Commitments [Line Items] Contractual Commitments Contractual Commitments [Table] Disclosure of contractual commitments of the entity. Current Interest Coverage Ratio, Covenant Compliance Current interest coverage ratio for cash flow triggers (as a percent) Represents the interest coverage ratio maintained during the period under covenant compliance. Interest coverage ratio is calculated by dividing interest income by interest expense for the classes senior to those retained by the entity. Current Overcollateralization Ratio, Covenant Compliance Current overcollateralization ratio for cash flow triggers (as a percent) Represents the overcollateralization ratio maintained during the period under covenant compliance. Overcollateralization ratio is calculated by dividing the total principal balance of all collateral in the CDO by the total principal balance of the bonds associated with the applicable ratio. Debt Instrument, Advance Rate Advance rate (as a percent) Represents the advance rate related to debt instruments. Deferred amount Debt Instrument, Amount Due at Maturity Amount of the principal payments due at maturity, which is being amortized into expense over the life of the debt. Deferred amount Due at maturity Debt Instrument Classes of Secured Floating Rate Notes, Number Number of classes of secured floating rate notes Represents the number of classes of secured floating rate notes. Debt Instrument, Amount of Facility used to Finance Retail and Office Property Amount of the facility used to finance retail and office properties Represents the amount of the facility which is used to finance retail and office properties. Debt Instrument Financing Replacement Period Replacement period Represents the replacement period of financing that allows the principal proceeds and sale proceeds (if any) of the loan obligations to be reinvested in qualifying replacement loan obligations. Available-for-sale Securities Available-for-sale securities Available-for-sale Securities [Member] Represents the number of investment grade tranches issued by the entity under collateralized debt obligations. Debt Instrument Investment Grade Tranches, Issued, Number Number of investment grade tranches issued Represents the amount of debt issued as a percentage of its face value. Debt Instrument, Issuance as Percentage of Face Value Percentage of original face amount at which debt was issued Represents the difference between face value and amount at which debt was issued, expressed as a percentage. Debt Instrument, Issuance as Percentage of Face Value Difference Percentage above face value at which debt was issued (as a percent) Nonredeemable period from issue date (in years) Represents the period from issuance during which debt instrument was not redeemable. Debt Instrument, Issue Date Non Redemption Period Debt Instrument, Maturity Date, Length of Extension Period Extension of maturity date (in years) Length of the extension period of the warehouse facility, which may be presented in years. Debt Instrument, Maturity Date Length of Extension Period Option Optional extension period (in years) Length of the optional extension period of the debt instrument, which may be presented in a years. Entity Well-known Seasoned Issuer Debt Instrument, Number of Paydowns Number of paydowns The number of times the paydown is required to be made under the borrowing facility. Entity Voluntary Filers Loss Contingency Number of Lawsuit Consolidated Number of lawsuits consolidated Represents the number of lawsuits consolidated. Entity Current Reporting Status Loss Contingency Number of Defendants Removed due to Consolidation of Lawsuits Number of defendants removed due to consolidation of lawsuits Represents the number of defendants removed due to consolidation of lawsuits. Entity Filer Category Loss Contingency Number of Remaining Defendants due to Consolidation of Lawsuits Number of defendants remaining due to consolidation of lawsuits Represents the number of defendants remaining due to consolidation of lawsuits. Entity Public Float Original maturity period (in years) Represents the maturity period of the borrowings of the entity. Debt Instrument, Original Maturity Period Entity Registrant Name Debt Instrument, Paydowns Percentage Paydowns (as a percent) Represents the paydowns required to be made under the borrowing facility, expressed as a percentage. Entity Central Index Key Debt Instrument, Period of Advance Repayment in Case of Number of Days Past Due Period by which loans become past due requiring full payment of an advance (in days) Represents the period by which loans become past due requiring full payment of an advance. Debt Instrument, Periodic Principal Payments, No Longer Made after Replenishment Date Amount of the periodic principal payments that will no longer be made as of the replenishment date. Unpaid amortization payments made on replenishment date Debt Instrument Transaction Fees Related to Debt Restructuring Transaction fees related to the restructuring of notes Represents information pertaining to the amount of transaction fees incurred related to the restructuring of debt. Debt Instrument Variable Rate LIBOR [Member] LIBOR The London Interbank Offered Rate (LIBOR) used to calculate the variable interest rate of the debt instrument. Entity Common Stock, Shares Outstanding Debt Instrument Variable Rate Prime Rate [Member] Prime The prime rate used to calculate the variable interest rate of the debt instrument. Debt Instrument Warehousing Period Warehousing period Represents the warehousing period allowed under the terms of debt agreement. Weighted average remaining maturity Represents the weighted average remaining period when the debt instrument is scheduled to be fully repaid. Debt Instrument Weighted Average Remaining Maturity Period Debt, Weighted Average Interest Rate, Excluding Swap Effect Weighted average note rate excluding the swap effect (as a percent) Reflects the calculation, as of the balance sheet date, of the average interest rate excluding the effect of swap weighted by the amount of debt outstanding by type or by instrument at that time. Debt Weighted Average Interest Rate Including Fees and Costs Weighted average note rate including certain fees and costs (as a percent) Represents the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding, including certain fees and costs. Deferred Compensation Arrangement Additional Number of Shares Authorized The additional number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date. Additional stock reserved for issuance (in shares) Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Deferred Tax Assets, Liabilities Net Before Valuation Allowances Deferred tax assets Expenses not currently deductible Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from expenses not currently deductible. Deferred Tax Assets Non Deductible Expenses Net operating and capital loss carryforwards Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards and capital loss carryforwards. Deferred Tax Assets Operating and Capital Loss Carryforwards Collateral posted Derivative Collateral Posted The amount of the right to reclaim cash collateral. The estimated net amount of deferred gains (losses) on terminated hedges, as of the reporting date, expected to be reclassified to earnings within the next 12 months. Derivative Instruments Deferred Gain (Loss) to be Reclassified During Next 12 Months Net Amount of net deferred loss expected to be recorded to interest expense over the next twelve months Derivative Notional Amount Decrease Decrease in notional value Represents the decrease in the notional value of derivative instruments. Number of derivative instruments, the notional amount of which decreased Represents the number of derivative instruments, the notional amount of which decreased. Derivative Number of Instruments for which Notional Amount Decreased Derivative Number of Instruments Matured Number of swaps matured The number of derivative instruments matured during the period. Direct Capitalization, Analysis and Discounted Cash Flows [Member] Direct capitalization analysis and discounted cash flows Direct capitalization analysis and discounted cash flows valuation technique used to measure fair value. Director who is Officer of Managing Member of Related Party [Member] Director is also an officer of the managing member of related party Represents the director is also an officer of the managing member of related party of the entity. Director who was Corporate Secretary [Member] Director who was also the corporate secretary Represents the director who was also the corporate secretary of the entity. Document Fiscal Year Focus Discounted Cash Flows [Member] Discounted cash flows Discounted cash flows valuation technique used to measure fair value. Document Fiscal Period Focus Distributions Distributions Distributions Disclosure [Line Items] Represents the entire disclosure in relation to dividends payable to common shareholders. Distributions Disclosure [Text Block] Distributions Distributions [Table] Disclosure of information pertaining to distributions of cash dividends declared. Entity by Location [Axis] Dividend Classified as Ordinary Income [Member] Dividend Classified as Ordinary Income Represents information pertaining to dividend classified as ordinary income for tax purposes. Document and Entity Information Due to borrowers The obligation from funds furnished by a borrower to a lender to assure future payments. Escrow deposits may be received for a variety of purposes such as earnest money and contingent payments. Due to borrowers (includes $0 and $1,320,943 from consolidated VIEs, respectively) Due to Borrowers. Due to Borrowers Due to Borrowers Due to Borrowers Disclosure [Text Block] Due to borrowers represents borrowers' funds held by the company to fund certain expenditures or to be released at the company's discretion upon the occurrence of certain pre-specified events, and to serve as an additional collateral for borrowers' loans. While retained, these balances earn interest in accordance with the specific loan terms they are associated with. Due to borrowers and reserves Represents the adjustment in respect of borrowers' funds held by the company to fund certain expenditures or to be released at the company's discretion upon the occurrence of certain pre-specified events and to serve as additional collateral for borrowers' loans. While retained, these balances earn interest in accordance with the specific loan terms they are associated with. Due to (Due from) Borrowers and Reserves Amount of retired debt instrument Early Retirement of Subordinated Debt The retirement of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets before its maturity. Amount of exchanged debt instrument Legal Entity [Axis] Represents information pertaining to the employee compensation and benefit. Employee Compensation and Benefit [Member] Employee compensation and benefits Document Type Employees of Entity and Related Party [Member] Employees of the company and a related party Represents information pertaining to the employees of the entity and a related party. Summary of Significant Accounting Policies Non-employees Represents information pertaining to non-employees of the entity. Non Employees [Member] Employees Employees [Member] Represents information pertaining to employees of the entity. Equity Method Investment Noncontrolling Interest Noncontrolling interest in equity method investment (as a percent) Represents information pertaining to the percentage of noncontrolling interest in equity method investment. Noncontrolling interest in equity method investment acquired (as a percent) Represents the percentage of noncontrolling interest in the equity method investment acquired by the entity. Equity Method Investment Noncontrolling Interest Acquired Noncontrolling interest in equity method investment acquired (as a percent) Equity Method Investment Number of Affiliate Entities Formed Number of affiliate entities formed Represents the number of equity affiliates formed. Equity Method Investment Preferred Return on Investments Percentage Preferred return on investment (as a percent) Represents the percentage of preferred return on investment for the noncontrolling interest acquired in the equity method investment. Equity Method Investment Return on Investments Percentage Return on investment (as a percent) Represents the percentage return on investment for the noncontrolling interest acquired in the equity method investment. Equity Method Investment Summarized Financial Information Cash and Cash Equivalents The amount of cash and cash equivalents reported by an equity method investment of the entity. Cash and cash equivalents Equity Method Investment Summarized Financial Information Depreciation and Amortization The amount of depreciation and amortization expenses reported by an equity method investment of the entity. Depreciation and amortization Equity Method Investment Summarized Financial Information Expenses Total expenses The amount of expenses reported by an equity method investment of the entity. Equity Method Investment Summarized Financial Information Expenses [Abstract] Expenses: Equity Method Investment Summarized Financial Information Interest Expense The amount of interest expense reported by an equity method investment of the entity. Interest expense Equity Method Investment Summarized Financial Information Interest Income The amount of revenue from interest income reported by an equity method investment of the entity. Interest income Equity Method Investment Summarized Financial Information Net Income (Loss) after Adjusting Realized Gain (Loss) on Disposal Represents information pertaining to the amount of net income (loss) reported by an equity method investment of the entity after adjusting realized gain loss on disposal. Arbor's Share of net (loss) income The amount of notes payable reported by an equity method investment of the entity. Notes payable Equity Method Investment Summarized Financial Information Notes Payable Equity Method Investment Summarized Financial Information Operating Expenses The amount of operating expenses reported by an equity method investment of the entity. Operating expenses The amount of revenue from operating income reported by an equity method investment of the entity. Operating income Equity Method Investment Summarized Financial Information Operating Income Equity Method Investment Summarized Financial Information Other Assets The amount of other assets reported by an equity method investment of the entity. Other assets Equity Method Investment Summarized Financial Information Other Expenses The amount of other expenses reported by an equity method investment of the entity. Other expenses Equity Method Investment Summarized Financial Information Other Income The amount of revenue from other income reported by an equity method investment of the entity. Other income Equity Method Investment Summarized Financial Information Other Liabilities The amount of other liabilities reported by an equity method investment of the entity. Other liabilities Equity Method Investment Summarized Financial Information Real Estate Assets The amount of real estate assets reported by an equity method investment of the entity. Real estate assets Equity Method Investment Summarized Financial Information Reimbursement Income The amount of revenue from reimbursement income reported by an equity method investment of the entity. Reimbursement income Equity Method Investment Summarized Financial Information Rental Income The amount of revenue from rental income reported by an equity method investment of the entity. Rental income Equity Method Investments Ownership Interest Retained Ownership interest retained Represents the ownership interest retained by the entity. Equity Method Investments Property Air Rights Retained Property air rights retained Represents the property air rights retained by the entity. Equity Method Investments Return on Investments Return on investment Represents the return on investment for the noncontrolling interest acquired in the equity method investment. Return on invested capital Fair Value, Inputs Price Per Acre Dollar per acre Cost of construction of real property stated is a price per acre, used as an input to measure fair value. Fiduciary Duty Claims [Member] Fiduciary Duty Claims Represents information pertaining to the Fiduciary Duty Claims which are claims related to aided and abetted, induced or participated in breaches of fiduciary duty, waste and unjust enrichment. Motion to Amendment Lawsuits [Member] Motion to amend the lawsuits Represents information pertaining to the motion filed by the Trust to amend the lawsuits. Percentage of finance to individual investment Financial Institution Refinance Amount Percentage to Held To Maturity Securities Investments Percentage of finance to individual investment by financial institution Represents the percentage of investments in securities categorized as held-to-maturity that is financed by the financial institution. Financing Receivable Modifications Made Considered Trouble Debt Restructurings Number of Loans The number of financing receivables that have been modified during the period that the company considered to be troubled debt restructurings. Number of loans considered to be troubled debt restructurings The number of financing receivables that have been modified during the period that the company considered to be troubled debt restructurings that subsequently considered non-performing. Financing Receivable Modifications Made Considered Trouble Debt Restructurings That Subsequently Considered Non Performing, Number of Loans Number of loans considered to be troubled debt restructurings that subsequently considered non-performing Number of additional loans considered to be troubled debt restructurings Represents the number of additional financing receivables that have been modified during the period that the entity considered to be troubled debt restructurings. Financing Receivable Additional Modifications Made Considered Trouble Debt Restructurings, Number of Loans Represents the number of financing receivables modified during the period that were not considered to be troubled debt restructurings by the entity. Financing Receivable Modifications Made Not Considered Trouble Debt Restructurings Number of Loans Number of loans not considered to be troubled debt restructurings Financing Receivable Modifications Made Not Considered Trouble Debt Restructurings Recorded Investment The amount of the outstanding recording investment related to financing receivables modified during the period that were not considered to be troubled debt restructurings by the entity. Unpaid principal balance of loans not considered to be troubled debt restructurings Financing Receivable Modifications Made Post Modification Unpaid Principal Balance The amount of unpaid principal balance (after modification) in financing receivables that have been modified during the period that the company considered to be troubled debt restructurings. Modified Unpaid Principal Balance Financing Receivable, Modifications Made Recorded Investment The amount of the outstanding recording investment related to financing receivables modified during the period that the company considered to be troubled debt restructurings. Original Unpaid Principal Balance Modified Weighted Average Rate of Interest (as a percent) Represents the weighted average interest rate on a group of loans after modifications that the company considered to be troubled debt restructurings. Financing Receivable Modifications Post Modification Weighted Average Rate of Interest Original Rate of Interest (as a percent) Represents the weighted average interest rate on a group of loans before modifications that the company considered to be troubled debt restructurings. Financing Receivable Modifications Pre Modification Weighted Average Rate of Interest Financing Receivable Portfolio Segments Number Number of portfolio segments Represents the number of portfolio segments of financing receivables. Financing Receivable Recorded Investment Less than 90 Days Past Due Financing receivables on nonaccrual status that are less than 90 days past due. Less Than 90 Days Past Due Number of loans that were refinanced and/or modified Number of financing receivable loans, that have been refinanced and/or modified by entity. Financing Receivable Refinancing or Modifications Number of Loans Financing Receivable Refinancing or Modifications Recorded Investment The amount of the outstanding recorded investment related to financing receivables that have been refinanced and/or modified during the period by the entity. Amount of loans that were refinanced and/or modified Unfunded commitments on modified loans classified as troubled debt restructurings Reflects the amount of the unfunded commitments related to loans considered to be troubled debt restructurings. Financing Receivables Impaired Troubled Debt Restructuring Unfunded Commitments First Dollar LTV Ratio (as percent) Represents the First Dollar LTV Ratio that is calculated by comparing the total of the company's senior most dollar and all senior lien positions within the capital stack to the fair value of the underlying collateral to determine the point at which the company will absorb a total loss of its position. First Dollar LTV Ratio Flushing 930 and Evergreen 80 [Member] 930 Flushing & 80 Evergreen Represents the investment in 930 Flushing & 80 Evergreen, an equity affiliate of the entity accounted under the equity method of accounting. Former Trust Preferred Securities [Member] Retired outstanding trust preferred securities Represents the information pertaining to former trust preferred securities issued by the entity consisting of junior subordinated notes and common stock issued. Fred Weber [Member] Mr. Fred Weber Represents information pertaining to Mr. Fred Weber, the chairman and chief executive officer of the entity. Amount of funds placed into an interest reserve, based on contractual requirements, to cover debt service costs. Total interest reserves Funded Interest Reserves Funded Interest Reserves Number of Loans Number of loans Represents the number of loans with funded interest reserves. Aggregate unpaid principal balance Funded Interest Reserves Unpaid Principal Balance Amount of unpaid principal balance of receivables with funded interest reserves. Represents the gain (loss) from continuing operations before gain on extinguishment of debt, income (loss) from equity affiliates of the reporting entity, and (provision) benefit for income taxes. Income from continuing operations before gain on extinguishment of debt and income (loss) from equity affiliates Income (Loss) from Continuing Operations Before Gain on Extinguishment of Debt, Net Income (Loss) from Equity Affiliates and Provision (Benefit) for Income Taxes Income (loss) from continuing operations before gain on extinguishment of debt, loss from equity affiliates and benefit (provision) for income taxes Gain (Loss) on Sale of Mortgage Note Payable Held For Sale Gain on sale of real estate held-for-sale Represents the gain (loss) on sale of mortgage notes held-for-sale by the reporting entity. Summary of the underlying credit ratings of the company's RMBS and CMBS investments held-to-maturity Tabular disclosure of held-to-maturity securities by credit quality indicator. The credit quality indicator is a statistic about the credit quality of held-to-maturity securities. Examples include, but are not limited to, consumer credit risk scores, credit-rating-agency ratings, the entity's internal credit risk grades and other internal metrics. Held To Maturity Securities Credit Quality Indicators [Table Text Block] Represents the discount received to acquire investments which are neither classified as trading nor available-for-sale securities. Held To Maturity Securities Discount Discount received to acquire investments Represents the face value of investments categorized as held-to-maturity. Held To Maturity Securities, Face Value Face Value Investments financed with a repurchase agreement with a financial institution Amount of repurchase agreement for financing the purchase of investments Held To Maturity Securities, Financed with Repurchase Agreement with Financial Institution Amount Represents the amount provided by the financial institution to the entity on purchase of investment securities categorized as held-to-maturity. Purchase amount of securities financed by financial institution Number of investments financed with a repurchase agreement with a financial institution Held To Maturity Securities, Number Number of securities Represents the number of securities owned by the entity categorized as held-for-sale. Held To Maturity Securities, Percentage Percent of Total Represents the held-to-maturity securities expressed as a percentage. Premium paid to acquire investments Represents the premium paid to acquire investments which are neither classified as trading nor available-for-sale securities. Held To Maturity Securities Premium Represents the number of held-to-maturity securities purchased. Held To Maturity, Securities Purchased Number of investments purchased Held To Maturity Securities Purchased at Discount Number Number of investments purchased at discount Represents the number of held-to-maturity securities purchased at discount. Held To Maturity Securities, Purchased at Par Number Number of investments purchased at par Represents the number of held-to-maturity securities purchased at par. Represents the number of held-to-maturity securities purchased at premium. Held To Maturity Securities, Purchased at Premium Number Number of investments purchased at premium Impaired Financing Receivable with Related Allowance Number of Loans Number of impaired loans Represents the number of impaired loans for which there is a related allowance for credit losses. Aggregate carrying value of impaired loans before reserves Impaired Financing Receivables Carrying Amount The carrying value of impaired financing receivables derived after deducting unearned revenue and other holdbacks. Carrying value Aggregate carrying value, before reserves Impaired Financing Receivables Carrying Value before, Write Down This represents the carrying value of impaired financing receivables prior to the write-down of the carrying value to the fair value of underlying collateral. Carrying value of impaired loan Number of impaired loans Represents the number of impaired loans. Impaired Loans Number Number of Loan for which No Provision for Loan Loss Made Number of loans for which no provision for loan loss made Represents the number of loans for which the value of the collateral securing the loan was less than the carrying value of the loan for which the entity has not recorded a provision for loan loss. Change in restricted cash This element represents the net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use, which includes restricted cash and cash equivalent net cash. Increase (Decrease) in Restricted Cash and Cash Equivalent Independent members Represents information pertaining to independent members of the entity. Independent Members [Member] Represents the information pertaining to real estate properties located in Indianapolis city in Indiana. Indianapolis [Member] Indianapolis, Indiana Represents the interest coverage ratio required to be maintained under covenant compliance. Interest coverage ratio is calculated by dividing interest income by interest expense for the classes senior to those retained by the entity. Interest Coverage Ratio, Covenant Compliance Limit interest coverage ratio for cash flow triggers (as a percent) Interest Rate Swaps / Caps Represents the forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period and contracts in which the cap writer, in return for a premium, agrees to limit or cap the cap holder's risk associated with an increase in interest rates. Interest Rate Swaps and Caps [Member] Risk rating, five Credit rating five, as defined under internal credit risk assessment. This rating is defined by the entity as the entity expects the loan to underperform over its term, and that there could be loss of interest and/or principal. Internal Credit Five Rating [Member] Internal Credit Four Point Five Rating [Member] Risk rating, 4.5 Credit rating four point five, as defined under internal credit risk assessment. This rating is defined by the entity indicate loans that have characteristics of both the immediately higher and lower classifications. Credit rating four, as defined under internal credit risk assessment. This rating is defined by the entity as the entity expects that the loan will require a modification of some kind. Risk rating, four Internal Credit Four Rating [Member] Represents the individual ratings assigned to credit risk during the loan valuation and risk assessment process. Internal Credit Risk Rating Credit risk individual ratings Credit rating three point five, as defined under internal credit risk assessment. This rating is defined by the entity indicate loans that have characteristics of both the immediately higher and lower classifications. Internal Credit Three Point Five Rating [Member] Risk rating, 3.5 Accretion of discount on investments Accretion (Amortization) of Discounts and Premiums, Investments Risk rating, three Credit rating three, as defined under internal credit risk assessment. This rating is defined by the entity as the entity expects the loan to make both principal and interest payments according to the contractual terms of the loan agreement, and is not considered impaired. Internal Credit Three Rating [Member] Interest spread (as a percent) The percentage points added to the reference rate to compute the variable rate on the investment securities. Investment Basis Spread on Variable Rate Base rate The reference rate for the variable rate of the investment securities, such as LIBOR or the U.S. Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. Investment Description of Variable Rate Basis Represents the estimated remaining maturity period of the investment securities. Investment Estimated Remaining Maturity Period Estimated remaining life (in years) Investments in Equity Affiliates Investments in the Series A1 Preferred Units of a holding company of Extended Stay, Inc. Represents the information pertaining to the investment in the Series A1 preferred units of a holding company of Extended Stay, Inc. Investment in Holding Company of Debtors Investment in Prime Outlet Through Consolidated Entity [Member] Investment through consolidated entity Represents information pertaining to the investment in Prime Outlets Member through a consolidated entity . Stated maturity period (in years) Represents the maturity period of the investment securities. Investment Maturity Period Number of investments sold Held to Maturity Securities Sold Represents the number of held-to-maturity securities sold. Investment Transferred to Real Estate Held For Sale Fair Value Investment classified as real estate held-for-sale Represents the value of investment transferred to real estate held-for-sale in noncash transactions during the reporting period. Investment transferred to real estate held-for-sale, net Investment Unamortized Discount Original discount Total original discount Represents the discount amount at the time of purchase of debt security categorized as neither trading nor held-to-maturity. Represents the weighted average yield on investment securities bases on their face values, including the amortization of premium. Investment Weighted Average Yield Weighted average yield (as a percent) Issuers of Junior Subordinated Notes [Member] Issuers of Junior Subordinated Notes Represents the investment in the issuers of the Junior Subordinated Notes, an equity affiliate of the entity accounted under the equity method of accounting. Ivan Kaufman and His Affiliated Entity [Member] Kaufman Entities Represents the information pertaining to Mr. Ivan Kaufman, chairman, chief executive officer and president and the affiliated entity of Mr. Ivan Kaufman. JT Prime [Member] JT Prime Represents the investment in JT Prime, an equity affiliate of the entity accounted under the equity method of accounting. Represents the information pertaining to a junior participating interest in a first mortgage loan. Junior Participating Interest [Member] Junior participating interest Junior participating loans Represents the information pertaining to junior participating loans. Junior Participating Loans [Member] Land and buildings, net of accumulated depreciation Represents land and buildings of real estate held for sale. Land and Buildings, Net Real Estate Held For Sale Land and Hotel Represents real estate held and assets that are an addition or improvement to real estate held and also assets including hotels. Land and Land Improvements and Hotel [Member] Office Building and Land and Land Improvements [Member] Represents buildings designed primarily for the conduct of business and real estate held and assets that are an addition or improvement to real estate held. Office and Land Land Net Real Estate Owned Represents land of real estate owned. Land Last Dollar LTV Ratio Last Dollar LTV Ratio (as percent) Represents the weighted average loan to value ratio that is calculated by comparing the total of the carrying value of the company's loan and all senior lien positions within the capital stack to the fair value of the underlying collateral to determine the point at which the company will initially absorb a loss. Lawsuit Filed by Extended Stay Litigation Trust [Member] Lawsuits filed by Extended Stay Litigation Trust (the Trust) Represents the information pertaining to the lawsuits filed by the Extended Stay Litigation Trust (the Trust) formerly the Extended Stay, Inc. and the Homestead Village L.L.C. family of companies (together ESI). Lexford Portfolio Lexford Portfolio [Member] Represents the investment in Lexford Portfolio, an equity affiliate of the entity accounted under the equity method of accounting. Lexford Represents the investment in Lightstone Value Plus REIT L.P, an equity affiliate of the entity accounted under the cost method of accounting. Lightstone Value Plus REIT LP [Member] Lightstone Value Plus REIT L.P Liquidity Covenant Compliance Liquidity requirement Represents the liquidity amount required according to covenants related to credit facility. Repurchase agreement Represents the information pertaining to loans represented by an agreement between the entity and another party for repurchase of identical or substantially the same loans at a date certain for a specified price. Loan Repurchase Agreements [Member] Loan Repurchase Agreements One [Member] Repurchase agreement, one Represents the information pertaining to loans represented by the first agreement between the entity and another party for repurchase of identical or substantially the same loans at a date certain for a specified price. Represents the information pertaining to loans represented by the second agreement between the entity and another party for repurchase of identical or substantially the same loans at a date certain for a specified price. Loan Repurchase Agreements Two [Member] Repurchase agreement, two Loan to Third Party Amount Received Amount of loan that was repaid by third party Represents the amount received from loan to a third party borrower for a portfolio of properties. Represents the amount receivable from loan to a third party borrower for a portfolio of properties. Loan to Third Party Unpaid Principal Balance Loan to third party borrower, unpaid principal balance Loans and Investments Portfolio [Member] Loans and investments portfolio Loans and investment portfolio, when it serves as a benchmark in a concentration of risk calculation, representing the sum of all reported loans and investment portfolio as of the balance sheet date. Loans and Investments Unfunded Commitments Unfunded commitments related to loans and investments Represents the amount of outstanding unfunded commitments related to loans and investments that the entity is obligated to fund as the borrowers meet certain requirements. Loss Contingency Number of Defendants Related to Company Number of defendants related to the entity Represents related to the Company number of defendants related to the entity. United States UNITED STATES Reflects the amount of reserves on loans on which no interest is continuing to be recognized. Loans and Leases Receivable Impaired Nonperforming Loan Loss Reserves Loan loss reserves Loss Contingency Seeking of Amounts from Affiliates of Entity Aggregate amount which the Trust would be seeking from the affiliates of the entity Represents the aggregate amount which the Trust would be seeking from the affiliates of the entity If the amended complaint is filed. Number of loans classified as non-performing which did not have loan loss reserve Reflects the number of loans which did not have loan loss reserves deemed to be questionable as to collection, on which no interest is continuing to be recognized. Loans and Leases Receivable without Loan Loss Reserves Impaired Nonperforming Loans Number of Loans Carrying value of loans classified as non-performing which did not have loan loss reserve Reflects the carrying amount of loans which did not have loan loss reserves on which no interest is continuing to be recognized. Loans and Leases Receivable without Loan Loss Reserves Impaired Nonperforming Nonaccrual of Interest Loans in Excess of Three Percent [Member] Represents the loans in excess of 3 percent. Loans in excess of 3% Represents the loans less than 3 percent. Loans less than 3% Loans Less than Three Percent [Member] Loans Receivable [Domain] Represents type of loans receivable by maturity dates. Represents information pertaining to the maturity date of July 2013 of loans receivable. Maturity Date July 2013 [Member] Maturity date of July 2013 Represents information pertaining to the maturity date of September 2013 of loans receivable. Maturity Date September 2013 [Member] Maturity date of September 2013 Represents the minimum LIBOR rate on the loans receivable. LIBOR Floor rate (as a percent) Loans Receivable Floor Rate Loans Receivable Maturity [Axis] Represents information pertaining to loans receivable, by their maturity dates. Loss Contingency, Damages Sought Value Due to Wrongful Receipt Amount alleged to be wrongfully received by holders of Series A1 Preferred Units The value of the award the plaintiff seeks in the legal matter as the plaintiff alleges the amount has been wrongfully received by the holders of the Series A1 Preferred Units. Number of defendants who are corporate and partnership entities Number of defendants named in a legal action who are corporate and partnership entities. Loss Contingency, Number of Defendants who are Corporate and Partnership Entities Loss Contingency, Number of Defendants who are Individuals Number of defendants named in a legal action who are individuals Number of defendants named in a legal action who are individuals. Loss Contingency Number of Lawsuits before Consolidation of Lawsuit Number of lawsuits before amendment Represents the number of lawsuits before amendment. Number of lawsuits after amendment Represents the number of lawsuits after amendment. Loss Contingency Number of Lawsuits after Consolidation of Lawsuit Loss Contingency, Number of New Claims Filed in United States Bankruptcy Court Number of lawsuits filed in United States Bankruptcy Court The total number of new claims filed pertaining to a loss contingency in the United states Bankruptcy Court during the period. Loss on sale and restructuring of loans Losses (Gains) on Sale and Restructuring of Loans For a lender, the aggregate loss (gain) recognized on the sale or restructuring of loans arises from the difference between the carrying value of the loan before the sale or restructuring and the sales price or fair value of the loan, net of payments received, after restructuring is complete. This element refers to the loss (gain) included in earnings and not to the cash proceeds of the sale or restructuring. Loss on sale and restructuring of loans from the execution of a forbearance agreement For a lender, the aggregate loss (gain) recognized on the sale or restructuring of loans from the execution of a forbearance agreement arises from the difference between the carrying value of the loan before the sale or restructuring and the sales price or fair value of the loan, net of payments received, after restructuring is complete. This element refers to the loss (gain) included in earnings and not to the cash proceeds of the sale or restructuring. (Losses) Gains on Sale and Restructuring of Loans from Execution of Forbearance Agreement (Losses) Gains on Sale and Restructuring of Loans from Sale of Loans to Third Party Loss on sale and restructuring of loans from the sale of loan to a third party For a lender, the aggregate loss (gain) recognized on the sale or restructuring of loans from the sale of loan to a third party arises from the difference between the carrying value of the loan before the sale or restructuring and the sales price or fair value of the loan, net of payments received, after restructuring is complete. This element refers to the loss (gain) included in earnings and not to the cash proceeds of the sale or restructuring. Management Agreement Base Management Fee Represents the amount the entity reimbursed to the manager for its actual costs incurred in managing the company's business based on the parties' agreement. Base Management Agreement Basis Spread Added to U S Treasury Rate for Calculation of Incentive Fee Basis spread added to the U.S. Treasury Rate for computation of incentive fee (as a percent) Represents the basis spread added to the U.S. Treasury Rate for computation of incentive fee. Management Agreement Management Agreement Disclosure [Text Block] Management Agreement Represents the entire disclosure in relation to management agreement to provide us with certain services. We pay a base management fee and under certain circumstances an annual incentive fee. Management Agreement Estimated Base Management Fee in Current Fiscal Year Expected base management fees during current period Represents the anticipated amount of base management fees that the entity will be reimbursing to the manager during current period. These fees are paid on the basis of arrangement whereby the entity reimburses the other party for its actual costs incurred in managing the entity's business based on the parties' agreement in advance on an annual budget with subsequent quarterly true-ups to actual costs. Represents the incentive fee charged for operating and managing the entity's business during the reporting period which is based on meeting certain profitability metrics. Management Agreement Incentive Fee Incentive Management Agreement, Incentive Percent, Fee Incentive fee calculation percentage Represents the percentage of incentive fee charged for operating and managing the entity's business during the reporting period which is based on meeting certain profitability metrics. Management Agreement, Interest Rate Used in Calculation of Incentive Fee Annual interest rate used in computation of incentive fee (as a percent) Represents the annual interest rate used in computation of incentive fee. Management Agreement [Line Items] Management Agreement Represents the period during which the loan loss reserve recoveries are to be taken into consideration for calculation of incentive fee. Management Agreement, Loan Loss Reserve Recoveries Period for Calculation of Incentive, Fee Period during which the loan loss reserve recoveries are to be taken into consideration for calculation of incentive fee Management Agreement Multiplier used in Calculation of Incentive Fee Multiplier used in computation of incentive fee Represents the multiplier used in computation of incentive fee. Represents the percentage of loan loss reserve recoveries used in calculation of incentive fee. Management Agreement, Percentage of Loan Loss Reserve Recoveries Used in Calculation of Incentive Fee Percentage of loan loss reserve recoveries used in calculation of incentive fee Renewable period for management agreement Represents the period for which the management agreement is automatically renewable unless terminated. Management Agreement, Renewable Period Disclosure of information pertaining to the agreement with other party related to management services provided by them. Management Agreement [Table] Term of U.S. Treasury Rate used in computation of incentive fee Represents the term of the U.S. Treasury Rate used in computation of incentive fee. Management Agreement, Term of US Treasury Rate Used in Calculation of Incentive Fee Termination fee Represents the amount of termination fee payable on termination of the management agreement. Management Agreement, Termination Fee Management Agreement, Termination Notice Period Prior written notice period for termination Represents the period for which notice is required to be served for termination of the management agreement. This notice is required to be served prior to termination. Management Fee Amount, Outstanding Base management fee expenses due to related party Carrying amount as of the balance sheet date of obligations due all related parties for base management fee expenses. Management Fees, Incentive Payment Period Period after each fiscal quarter in which the incentive fee is payable Represents the period after each fiscal quarter in which the incentive fee is required to be paid. Maturity Date April 2013 [Member] Maturity date of April 2013 Represents the information pertaining loans receivable with the maturity date as April 2013. Represents the information pertaining loans receivable with the maturity date as Feb 2013. Maturity Date Feb 2013 [Member] Maturity date of February 2013 Maturity Date June 2012 [Member] Maturity date of June 2012 Represents the information pertaining loans receivable with the maturity date as June 2012. Maturity Date March 2014 [Member] Maturity date of March 2014 Represents the information pertaining loans receivable with the maturity date as March 2014. Maturity Date November 2014 [Member] Maturity date of November 2014 Represents information pertaining to the maturity date of November 2014, of loans receivable. Maturity Date January 2015 [Member] Maturity date of January 2015 Represents information pertaining to the maturity date of January 2015, of loans receivable. Maturity Date May 2014 [Member] Maturity date of May 2014 Represents information pertaining to the maturity date of May 2014 of loans receivable. Maturity Date May 2015 [Member] Maturity date of May 2015 Represents information pertaining to May 2015 as the maturity date of loans receivable. Maturity Date May 2016 [Member] Maturity date of May 2016 Represents the information pertaining loans receivable with the maturity date as May 2016. Mezzanine loan Mezzanine Loans Represents information pertaining to mezzanine loans issued by the entity. Mezzanine Loan [Member] Minimum Percentage of Taxable Income to be Distributed to Claim Exemption from Corporate Federal Income Taxes on Retained Income Minimum taxable income to be distributed in order not to be subject to corporate federal income taxes on retained income (as a percent) Represents information pertaining to the minimum percentage of taxable income to be distributed to stockholders in order not to be subject to corporate federal income taxes on retained income. Mortgage Loans on Real Estate Accretion of Unearned Revenue Accretion of unearned revenue The amount of additions to mortgage loans due to accretion of unearned revenue during the reporting period. Mortgage Loans on Real Estate, Additional Investment The entity's interest of the additional investment made in the mortgage loans on real estate during the reporting period. Interest held in the additional investment made Additional investment made by the company along with a consortium of independent outside investors The amount of additional investment made by the company, along with a consortium of independent outside investors, in the mortgage loans on real estate during the reporting period. Mortgage Loans on Real Estate, Additional Investment by Entity and Independent Outside Investors Aggregate carrying value of loans related to which a portion has been sold to third party Represents the aggregate carrying value of loans related to which a portion has been sold to third party. Mortgage Loans on Real Estate Aggregate Carrying Amount of Loans Related to which Portion has Been Sold to Third Party Mortgage Loans on Real Estate Area of Submerged Land Area of pledged submerged land (in acres) Represents information pertaining to the area of submerged land held as mortgage-related securities. Mortgage Loans on Real Estate Area of Usable Land Area of pledged usable land (in acres) Represents information pertaining to the area of usable land held as mortgage-related securities. Mortgage Loans on Real Estate Carrying Amount of Loan Sold to Third Party Carrying value of loans sold to third party Represents information pertaining to the amount of carrying value of loans sold to third party, which had been fully reserved in a prior period. Carrying value prior to provision for loan loss The carrying amount of the outstanding balance due under the mortgage loan prior to provision for loan loss. Mortgage Loans on Real Estate Carrying Amount of Mortgages Prior to Provision for Loan Loss Mortgage Loans on Real Estate Carrying Value Represents the carrying value of the mortgage loans that serve as collateral. Collateral Loans, Carrying Value The reference rate for the modified variable rate on the mortgage loan receivable, such as LIBOR or the U.S. Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. Mortgage Loans on Real Estate, Description of Modified Variable Rate, Basis Modified variable rate basis Mortgage Loans on Real Estate, Description of Original Variable Rate, Basis Original variable rate basis The reference rate for the original variable rate on the mortgage loan receivable, such as LIBOR or the U.S. Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. Represents the fixed interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans. Mortgage Loans on Real Estate Fixed Interest Rate Fixed rate of interest (as a percent) The amount of additions to mortgage loans due to funding of unfunded loan commitments during the reporting period. Mortgage Loans on Real Estate Funding of Unfunded Loan Commitments Funding of unfunded loan commitments Loan carrying value prior to provision for loan losses The gross carrying amount before any write-off of the outstanding balance due under the mortgage loan. Mortgage Loans on Real Estate, Gross Carrying Amount of Mortgages Prior to Provision for Loan Loss Mortgage Loans on Real Estate Loss on Sale and Restructuring of Loans Loss on sale and restructuring of loans The amount of reductions of mortgage loans due to loss on sale and restructuring of loans, during the reporting period. Mortgage Loans on Real Estate, Modified Basis Spread on Variable Rate Modified basis spread (as a percent) The percentage points added to the reference rate to compute the modified variable rate on the mortgage loan receivable. Mortgage Loans on Real Estate, Original Basis Spread on Variable Rate Original basis spread (as a percent) The percentage points added to the reference rate to compute the original variable rate on the mortgage loan receivable. Mortgage Loans on Real Estate LIBOR Floor on Variable Rate LIBOR floor (as a percent) The percentage points added to the variable rate to compute the original variable rate on the mortgage loan receivable. Mortgage notes payable - real estate owned Represents the information pertaining to liability for mortgage notes payable by the reporting entity in connection with the acquisition of real property in which the reporting entity had a loan secured by the real estate property. Mortgage Loans on Real Estate Owned [Member] The amount of partial principal collected on mortgage loans on real estate during the reporting period. Mortgage Loans on Real Estate Partial Collections of Principal Loan paydowns Mortgage Loans on Real Estate Percentage Percent of Total Represents a category of loans on real estate expressed as a percentage of total loans on real estate. Percentage of Portfolio Mortgage Loans on Real Estate Pledged Land Number of Dwellings Per Acre Pledged land, number of dwellings per acre Represents information pertaining to the number of dwellings per acre on pledged land held as mortgage-related securities. Mortgage Loans on Real Estate Principal Amount of Mortgages Collateral Loans, Unpaid Principal Represents the unpaid principal balance of the mortgage loans that serve as collateral. Mortgage Loans on Real Estate Proceeds Against Junior Loan Participations Proceeds used against junior loan participations Represents the amount reductions of mortgage loans due to proceeds and used against junior loan participations during the reporting period. Mortgage Loans on Real Estate Proceeds and Receivables from Sale of Loans Proceeds and receivables from sale of loans The amount of reductions of mortgage loans due to proceeds and receivables from sale of loans, during the reporting period. Mortgage Loans on Real Estate Property Location [Domain] The location of real estate properties that secure real estate mortgage loans. Net unrealized losses on derivatives designated as cash flow hedges Cumulative amount of other comprehensive loss related to net unrealized losses on derivatives designated as qualifying hedges Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax Charge-off on loans converted to real estate owned The amount of additions to mortgage loans due to reclassification of allowance for loan loss to real estate owned during the reporting period. Mortgage Loans on Real Estate Reclassification of Allowance for Loan Loss to Real Estate Owned Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Unrealized gain related to available-for-sale securities Represents the weighted average remaining maturity period of mortgage loans. Mortgage Loans on Real Estate Remaining Maturity Period Wtd. Avg. Remaining Months to Maturity Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Accumulated other comprehensive loss Mortgage Loans on Real Estate, Restructured Loan restructured The amount of mortgage loans on real estate which were restructured during the reporting period. Mortgage Loans on Real Estate Unearned Revenue and Costs Unearned revenue and costs The amount of reductions of mortgage loans due to unearned revenue and costs, during the reporting period. Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income (Loss) [Member] The amount of reductions of mortgage loans due to use of loan charge-offs, during the reporting period. Mortgage Loans on Real Estate Use of Loan Charge Offs Use of loan charge-offs Mortgage Note Payable, Held For Sale Represents the liability for mortgage notes payable by the reporting entity in connection with the acquisition of real property which is held-for-sale. Mortgage notes payable-held-for-sale Mortgage note payable - real estate held-for-sale Mortgage Notes Payable, Real Estate Owned Represents the liability for mortgage notes payable by the reporting entity in connection with the acquisition of real property. Mortgage note payable - real estate owned Mortgage note payable - real estate owned and held-for-sale Represents the information pertaining to mortgage notes payable with maturity date of March 2014 secured by real estate owned by the entity. Mortgage Notes Payable, Secured by Real Estate Owned Due March, 2014 [Member] Mortgage Notes Payable - Real Estate Owned with maturity date of March 2014 Movement in Mortgage Loans on Real Estate Additions [Abstract] Additions during period: Deductions during period: Movement in Mortgage Loans on Real Estate Deductions [Abstract] Proceeds from underwriters following the exercise of a portion of their over-allotment option, net Represents the proceeds from exercise of over-allotment option by underwrites, net of the underwriting discount. Net Proceeds from Issuance of Stock to Underwriters Net recoveries of previously recorded loan loss reserves Reflects the net recoveries of previously recorded bad debt expense. Net Recoveries of Bad Debt Expense Net worth required under covenant Represents the net worth required to be maintained under covenant related to credit facility. Net Worth Covenant Compliance New Preferred Equity Investments in Mortgage Loans [Member] New preferred equity investment Represents the entity's new preferred equity investments in mortgage loans on real estate. Represents information pertaining to non-management members of the Board of Directors. Non Management Members of the Board of Directors [Member] Non-management members of the Board of Directors Other Comprehensive Income / (Loss) Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Noncash (Losses) Gains on Sale and Restructuring of Loans Loss on sale and restructuring of loans For a lender, the aggregate noncash loss (gain) recognized on the sale or restructuring of loans arises from the difference between the carrying value of the loan before the sale or restructuring and the sales price or fair value of the loan, net of payments received, after restructuring is complete. This element refers to the loss (gain) included in earnings and not to the cash proceeds of the sale or restructuring. Investment in real estate, net The amount of investments in real estate that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Noncash or Part Noncash Acquisition of Real Estate Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income (Loss) [Line Items] Notes Payable, Expiring July 2016 [Member] Note payable relating to investment in equity affiliate, expiration July 2016, interest is fixed, the weighted average note rate was 4.06% Represents the information pertaining to notes payable related to investment in equity affiliates, expiring in July 2016. Note payable related to the exchange of POM profits interest transaction Notes payable Represents the information pertaining to notes payable related to investment in equity affiliates and junior loans in which the entity has interest. Notes Payable [Member] Represents the notional value of derivative instruments that have matured during the reporting period. Notional Amount of Derivatives Matured Notional value of matured instruments Number of Days Average Closing Common Stock Price to be Considered for Incentive Fee Paid in Common Stock Number of days during the end of fiscal quarter with respect to which incentive fee is being paid Represents the number of days during which the average closing price of the entity's common stock is considered in order to issue common stock shares as a part of management incentive fee. Number of impaired loans Represents the number of impaired loans. Number of Impaired Loans Impaired Financing Receivable, Unpaid Principal Balance, Number of Loans Number of loans with unpaid principal balance Represents the number of loans with unpaid principal balance. Represents the number of loans for which entity had not previously recorded reserves. Number of Loans not Previously Impaired Number of loans on which Company had not previously recorded reserves Number of loans written off Represents the number of loans written off during the period. Number of Loans Written Off Number of Mortgage Loans Reclassified Number of loans reclassified to real estate owned Represents the number of mortgage loan reclassified during the period. Number of Preferred Equity Investments Written Off Number of preferred equity investments written-off Represents the number of preferred equity investments written-off. Number of Real Estate Properties Sold Number of properties sold Represents the number of real estate properties sold within the portfolio. Number of Shares Authorized to be Issued under Agreement Number of shares which the entity may issue and sell through JMP Represents the number of shares permitted to be issued under the equity offering plan. Number of Unrelated Borrowers Number of different borrowers Represents the number of unrelated borrowers. Represents the number of common stock shares issued upon redemption of each operating partnership unit. Operating Partnership Unit Redemption Rate to Shares Common stock shares issued on redemption of operating partnership units Operating Partnership Units Redeemed Value of operating partnership units redeemed Represents the number of operating partnership units redeemed. Operating Partnership Warrants Exercised Units Issued Operating partnership units issued for which warrants were exercised Represents the number of operating partnership units issued for which warrants were exercised. Original Preferred Equity Investments in Mortgage Loans [Member] Original preferred equity investment Represents the entity's original preferred equity investments in mortgage loans on real estate. Overcollateralization Ratio, Covenant Compliance Limit overcollateralization ratio for cash flow triggers (as a percent) Represents the overcollateralization ratio required to be maintained under covenant compliance. Overcollateralization ratio is calculated by dividing the total principal balance of all collateral in the CDO by the total principal balance of the bonds associated with the applicable ratio. Ownership Percentage Limit Ownership interest allowed under company charter (as a percent) Represents the maximum percentage of ownership interest allowed under the company's charter. Ownership Percentage Limit before Amendment Ownership interest allowed under company charter before amendment (as a percent) Represents the maximum percentage of ownership interest allowed under the company's charter before amendment. Represents the cash outflow during the reporting period in respect of payments for loans and investments funded and purchased by the reporting entity. Loans and investments funded, originated and purchased, net Payment for Loans and Investments Funded Originated and Purchased, Net Payments for Early Retirement of Subordinated Debt Cash payments for debt instrument retired Represents the amount paid for the retirement of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets before its maturity. The cash outflow for financing RMBS investments through repurchase agreement with the same counterparty during the period , which are classified as Linked transactions. Payments on Financial Instruments Underlying Linked Transactions Payments on financial instruments underlying linked transactions The cash outflow associated with the purchase of or advances to equity method investments by the company, along with a consortium of independent outside investors. Payments to Acquire Equity Method Investments by Entity and Independent Outside Investors Equity investment made Represents the percentage of incentive fee paid by way of issuance of common stock shares. Percentage of Incentive Fee Paid in Common Stock Percentage of incentive fee paid by issuance of common stock shares Percentage of Ownership of Related Party in Other Related Party Percentage of outstanding membership interest of related party in another related party Represents the percentage of outstanding membership interest of a related party in another related party. Percentage of services provided by asset management group per quarter over the level of activity anticipated based on which base management fee can be negotiated in good faith Represents information pertaining to the percentage of services provided in each quarter over the level of activity anticipated based on which base management fee can be negotiated in good faith. Percentage of Services Provided over Anticipated Activity per Quarter at which Base Management Fees can be Negotiated Period within which the entity must sell the loan Represents the period within which the entity is required to sell the loan receivable from a third party borrower. Period within which Loan to Third Party Must be Sold Preferred equity investments Preferred Equity Loans Represents the entity's preferred equity investments in mortgage loans on real estate. Preferred Equity Investments in Mortgage Loans [Member] Preferred Equity Investments Written Off Carrying Value Carrying value of preferred equity investments written-off Represents the carrying value of preferred equity investments written-off. Additional Paid in Capital, Common Stock Additional paid-in capital Prepaid Management Fees Prepaid management fees Represents the management fees paid in advance by the entity. Prime Outlet LLC [Member] Represents information pertaining to Prime Outlets Member, LLC. POM Proceeds from Issuance of Additional Secured Loan Obligations Proceeds from additional loan obligations The cash inflow from amounts received from issuance of additional long-term debt that is wholly or partially secured by collateral. Proceeds from Issuance of Secured Loan Obligation The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Proceeds from collateralized loan obligations Represents the cash inflow (outflow) during the reporting period from the acquisition (disposition) of investments in real estate owned by the reporting entity. Principal payoffs Proceeds from Payments for Investments in Real Estate Owned, Net Proceeds from investments in real estate, net Payoffs and paydowns of loans and investments Proceeds from Payoffs and Paydowns of Loans and Investments Represents the cash inflow during the reporting period in respect of payoffs and paydowns of loans and investments held by the reporting entity. Principal paydowns of loan sold Represents the amount received on sale of investment in joint venture in to a related party. Proceeds from Sale of Investment in Joint Venture to Related Party Amount received by related party on sale of investment in joint venture to a related party Additional Paid-in Capital Additional Paid-in Capital [Member] Proceeds from Sale of Loans Receivable to Third Party Sale value of loan sold to third party The proceeds associated with the sale of a loan to a third party. Property Management Contract Period Contract period with the new entity Represents the period of the property management contract. Loans Receivable Extended Period of Loan Extended period of loan Represents the extended period of the loans receivable. Property Management Fees as Percentage of Gross Revenues of Underlying Properties Fees as a percentage of gross revenues of the underlying properties Represents the fees payable as a percentage of gross revenues of the underlying properties under the property management contract. Real Estate Condo [Member] Condo A building or complex in which units of property, such as apartments, are owned by individuals and common parts of the property, such as the grounds and building structure, are owned jointly by the unit owners. Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Real Estate Held For Sale [Line Items] Real Estate held for sale Represents real estate held for sale by the entity. Real Estate Held For Sale [Member] Real Estate held for sale The carrying amounts of cash and cash equivalent items of the entity's real estate owned assets which are restricted as to its withdrawal or usage. Real Estate Investment Property Restricted Cash and Cash Equivalents Restricted cash, real estate owned asset Represents the properties, such as apartments, duplexes and others that are constructed for use by multiple family groups and also includes building designed primarily for the conduct of business, for example, but not limited to, administration, clerical services, and consultation. Real Estate Multi Family and Office Building [Member] Multi-family and Office Real Estate, Multi Family [Member] Multifamily Portfolio Properties, such as apartments, duplexes and others that are constructed for use by multiple family groups. Multi-family Real Estate Owned and Held-For-Sale Real Estate Owned and Held For Sale [Policy Text Block] Disclosure of accounting policy for real estate owned and held for sale. Real Estate owned Real Estate Owned [Line Items] Real Estate Owned [Member] Real Estate owned Represents real estate owned by the entity. Real Estate Owned Properties, Number Number of properties Represents the number of properties classified as real estate owned by the entity, as of the balance sheet date. Real Estate Owned Properties Weighted Average Occupancy Rate Weighted average occupancy rate of properties (as a percent) Represents the weighted average occupancy rate of properties classified as real estate owned. Realty Finance Corporation Represents information pertaining to Realty Finance Corporation, formerly CBRE Realty Finance, Inc. Realty Finance Corporation [Member] CBRE Reappointed Director [Member] Director who was re-appointed to the board of directors on December 19, 2011 Represents the director who was re-appointed to the Board of Directors of the entity. Receipts on Financial Instruments Underlying Linked Transactions Receipts on financial instruments underlying linked transactions The cash inflow provided by financial instruments during the period, which are classified as Linked transactions. Reissuance of Debt Represents the non cash investing and financing activities in relation to re-issuance of CDO debt of the reporting entity. Portion of the entity's bonds that were exchanged Re-issuance of CDO debt Related Party Transaction, Amount of Bridge Loan Receivable Amount of bridge loan purchased from related party Represents the amount of bridge loan purchased from the related party. Related Party Transaction, Amount of Mortgage Loan Secured by Property Purchased from Related Party Amount of mortgage loan secured by property purchased from related party Represents the amount of mortgage loan secured by property purchased by the related party. Related Party Transaction, Amounts of Loan Purchased by Related Party Loan amount purchased by related party Represents the amount of loan on the property purchased by the related party. Related Party Transaction, Contribution by Related Party to Acquire Interest in Third Party Entity Contribution by related party for acquiring non-controlling interest in a third party entity Represents the contribution made by the related party for acquiring a non-controlling interest in a third party entity. Related Party Transaction, Number of Mortgage Loans Secured by Property Purchased from Related Party Number of mortgage loans secured by property purchased from related party Represents the number of mortgage loans secured by property purchased from the related party. Related Party Transaction, Number of Properties Purchased by Related Party Number of properties purchased by the related party Represents the number of properties in the portfolio purchased by the related party. Related Party Transaction, Percentage of Non Controlling Interest Acquired in Third Party Entity Percentage of non-controlling interest acquired on contribution Represents the percentage of non-controlling interest acquired on contribution. Related Party Ownership Percentage Percentage of ownership interest of related party in the entity Represents the percentage of ownership of common stock or equity participation owned by related party in the entity. Related Party Transaction, Percentage of Ownership Percentage of voting power held by related party Represents the percentage of voting power held by a related party. Related Party Transaction, Percentage of Ownership Interest Percentage of ownership of third party entity in joint venture Represents the percentage of ownership of the third party entity in joint venture. Related Party Transaction, Shares Held by Related Party Number of shares held by related party Represents the number of common shares held by a related party. Release of Mortgage Note Payable Held For Sale Release of mortgage note payable held-for-sale Represents the amount of mortgage note payables released through noncash transactions. Residential Mortgage Backed Securities Purchased at Discount [Member] RMBS investment purchased at discount Represents information pertaining to the security collateralized by residential real estate mortgage loans purchased at discount. RMBS investment purchased at par Represents information pertaining to the security collateralized by residential real estate mortgage loans purchased at par. Residential Mortgage Backed Securities Purchased at Par [Member] Residential Mortgage Backed Securities Purchased at Premium [Member] RMBS investment purchased at premium Represents information pertaining to the security collateralized by residential real estate mortgage loans purchased at premium. Issuance of warrants in conjunction with debt restructuring Restricted Cash [Abstract] Restricted Cash Retirement of Participation Liability Retirement of participation liabilities Represents the amount of Participation loan retired through noncash transactions. Reversal of Liabilities Related to Discontinued Operations Reversal of liabilities related to discontinued operations Represents the amount of reversal of liabilities upon the transfer of ownership of real estate held for sale. Represents the investment in Ritz-Carlton Club, an equity affiliate of the entity accounted under the equity method of accounting. Ritz Carlton Club [Member] Ritz-Carlton Club Represents the amount of Participation loan settled through noncash transactions. Satisfaction of Participation Loan Satisfaction of participation loans Schedule of Base Management Fees and Incentive Fees [Table Text Block] Tabular disclosure of the base management fees and incentive fees paid as per the terms of agreement with management. Schedule of Company's base and incentive compensation management fees Schedule of information related to description of business and nature of ownership. Schedule of Business Description and Form of Ownership [Table] Tabular disclosure of financing receivable charge-offs and recoveries. Schedule of Charge Offs and Recoveries on Financing Receivables [Table Text Block] Summary of charge-offs and recoveries Schedule of Debt Instrument, Covenant Compliance [Table Text Block] Summary of the company's CDO and CLO compliance tests as of the most recent determination dates Tabular disclosure of information pertaining to debt instruments' compliance tests for determination whether the entity was in compliance with all financial covenants and restrictions. Schedule of Dividends Paid [Table Text Block] Schedule of dividends paid by the Company on its common and preferred stock Tabular disclosure of all or some of the information related to dividends paid, as of the financial reporting date. Tabular disclosure of a condensed balance sheet of equity method investment. Schedule of Equity Method Investment Condensed Balance Sheet [Table Text Block] Summary of condensed combined balance sheets for the Company's unconsolidated investments in equity affiliates Summary of condensed combined statements of operations for the Company's unconsolidated investments in equity affiliates Tabular disclosure of a condensed income statement of equity method investment. Schedule of Equity Method Investment Condensed Income Statement [Table Text Block] Schedule of Overcollateralization Ratio Covenant Compliance [Table Text Block] Summary of the Company's CDO and CLO overcollateralization ratios Tabular disclosure of overcollateralization ratio maintained during the period under covenant compliance. Schedule of Real Estate Held For Sale [Table] Schedule detailing quantitative information concerning real estate held for sale. Schedule of Real Estate Owned [Table] Schedule detailing information of real estate owned. Secured Debt Repurchase Agreements and Warehouse Agreement Borrowings Repurchase agreements and credit facilities Carrying value, as of the balance sheet date, of securities sold under agreements to repurchase and the carrying value, as of the balance sheet date, of the outstanding borrowings under warehouse and revolving lines of credit. Credit facilities Debt Carrying Value, Total repurchase agreements and credit facilities Carrying value, as of the balance sheet date, of securities sold under agreements to repurchase and the carrying value, as of the balance sheet date, of the outstanding borrowings under warehouse and revolving lines of credit used by mortgage bankers to finance the origination or purchase of loans. Secured Debt Repurchase Agreements and Warehouse Agreement Borrowings [Member] Repurchase agreements and credit facilities Represents the notional amount of equity interest retained in the portfolio of secured floating rate notes. Secured Floating Rate Notes, Notional Amount Notional amount of equity interest retained Secured Junior Participating Loans [Member] Junior loan participation, maturity of March 2016, secured by the Company's interest in a bridge loan with a principal balance of $70.1 million, participation interest is a weighted average variable interest rate of 7.30% Represents the information pertaining to junior participating loans secured by first mortgage loan. Adjustments to reconcile net income to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Series A Cumulative Redeemable Preferred Stock 8.25 Percent [Member] Represents information pertaining to the 8.25% Series A cumulative redeemable preferred stock. 8.25% Series A cumulative redeemable preferred stock 8.25% Series A preferred stock 7.75% Series B preferred stock Series B Cumulative Redeemable Preferred Stock 7.75 Percent [Member] 7.75% Series B cumulative redeemable preferred stock Represents information pertaining to the 7.75% Series B cumulative redeemable preferred stock. Shareholder Equity Notes [Abstract] Common stock Shelf Registration Statement, Amount Aggregate amount of securities for which the entity filed shelf registration statement Represents the amount of securities for which the entity filed shelf registration statement on Form S-3 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the 1933 Act). Value of common stock remaining under shelf registration Represents the amount of shares for which the entity filed shelf registration statement on Form S-3 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the 1933 Act) that are currently available under shelf registration. Shelf Registration Statement Shares Available Amount Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Grant Date Fair Value Total grant date fair value The total fair value of equity-based payment equity instruments, excluding stock or unit options, as of grant date. St. John's Development Represents the investment in St. John's Development, an equity affiliate of the entity accounted under the equity method of accounting. St Johns Development [Member] Represents the information pertaining to real estate properties located in St. Louis city in Missouri. St Louis [Member] St. Louis, Missouri NR No rating has been requested, or there is insufficient information on which to base a rating by the external credit rating agency, Standard & Poor's. Standard Poors Unrated [Member] Represents the number of shares issued to underwriters as a result of exercise of over-allotment option. Stock Issued During Period Shares Issued to Underwriters Additional shares issued due to exercise of portion of over-allotment option by underwriters Over-allotment option exercised by underwriters (in shares) Stock Issued during Period Shares New Issues on Exercise of Overallotment Option by Underwriter Option exercised by underwriters (in shares) Number of new stock issued during the period on exercise of over-allotment option by underwriters. Stock Issued During Period Shares Warrants Exercised Common stock shares issued from exercise of warrants Number of share warrants exercised during the period. Equity impact of the value of new stock issued during the period on exercise of over-allotment option by underwriters. Additional net proceeds from exercise of over-allotment option by underwriters Stock Issued during Period Value New Issues on Exercise of Overallotment Option by Underwriter Additional net proceeds from exercise of option by underwriters Summary of Significant Accounting Policies Summary of Significant Accounting Policies [Line Items] Summary of Significant Accounting Policies [Table] Information related to various accounting policies of the entity. Tangible Net Worth, Covenant Compliance Tangible net worth including junior subordinated notes as equity Represents the tangible net worth including junior subordinated notes as equity required according to covenants related to credit facility. Terminated Hedges [Member] Terminated hedges Derivative instruments designated as hedging instruments which have been terminated. Threshold for reporting loans (as a percent) Threshold Percentage for Reporting Loans The threshold percentage for reporting loans in the schedule of mortgage loans on real estate. Total Liabilities Less Subordinated Debt, Covenant Compliance Total liabilities less subordinated debt Represents the total liabilities less subordinated debt required according to covenants related to credit facility. Transfer of real estate held-for-sale to first lien holder Transfer of Real Estate Held For Sale Value of real estate held for sale transferred to first mortgage holder in satisfaction of mortgage note payable in noncash transactions. Tucson [Member] Tucson, Arizona Represents the information pertaining to real estate properties located in Tucson city in Arizona. Unsecured Junior Subordinated Notes, April 2037 One [Member] Junior subordinated notes, maturity April 2037, unsecured, face amount of $15.7 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 2.71% and 2.74%, respectively Represents the first unsecured junior subordinated notes with maturity date of April 2037. Unsecured Junior Subordinated Notes, due April 2035 One [Member] Junior subordinated notes, maturity April 2035, unsecured, face amount of $7.0 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 3.48% and 3.51%, respectively Represents the first unsecured junior subordinated notes with maturity date of April 2035. Unsecured Junior Subordinated Notes, Due April 2035 Two [Member] Junior subordinated notes, maturity April 2035, unsecured, face amount of $21.2 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 3.48% and 3.51%, respectively Represents the second unsecured junior subordinated notes with maturity date of April 2035. Unsecured Junior Subordinated Notes, Due April 2037 Two [Member] Represents the second unsecured junior subordinated notes with maturity date of April 2037. Junior subordinated notes, maturity April 2037, unsecured, face amount of $31.5 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 2.71% and 2.74%, respectively Unsecured Junior Subordinated Notes, due June 2036 One [Member] Junior subordinated notes, maturity June 2036, unsecured, face amount of $14.6 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 2.79% and 2.83%, respectively Represents the first unsecured junior subordinated notes with maturity date of June 2036. Junior subordinated notes, maturity June 2036, unsecured, face amount of $2.6 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 2.79% and 2.83%, respectively Represents the second unsecured junior subordinated notes with maturity date of June 2036. Unsecured Junior Subordinated Notes, Due June 2036 Two [Member] Junior subordinated notes, maturity March 2034, unsecured, face amount of $28.0 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 3.15% and 3.18%, respectively Represents the first unsecured junior subordinated notes with maturity date of March 2034. Unsecured Junior Subordinated Notes, due March 2034 One [Member] Unsecured Junior Subordinated Notes, due March 2034 Three [Member] Junior subordinated notes, maturity March 2034, unsecured, face amount of $27.3 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 3.15% and 3.18%, respectively Represents the third unsecured junior subordinated notes with maturity date of March 2034. Junior subordinated notes, maturity March 2034, unsecured, face amount of $28.0 million, interest rate fixed until 2012 then variable based on three-month LIBOR, the weighted average note rate was 3.15% and 3.18%, respectively Represents the second unsecured junior subordinated notes with maturity date of March 2034. Unsecured Junior Subordinated Notes, due March 2034 Two [Member] Valuation Models [Member] Valuation models Represents the valuation models and techniques used to measure fair value. Variable Interest Entities Variable Interest Entities Disclosure [Text Block] Represents the entire disclosure of Variable Interest Entities and evaluation by entity of its loans and investments, mortgage related securities, investments in equity affiliates, junior subordinated notes and CDOs, in order to determine if they qualify as VIEs or as variable interests in VIEs. A VIE is defined as an entity in which equity investors (i) do not have the characteristics of a controlling financial interest, and/or (ii) do not have sufficient equity at risk for the entity to finance its activities without additional financial support from other parties. Three CDO subsidiaries, which qualify as VIEs, of which the company is the primary beneficiary. Variable Interest Entities Represents the investment in securities collateralized by a pool of assets, of a VIE. Variable Interest Entity, Collateralized Debt Obligation Bonds [Member] CDO Bonds Represents the investment in securities collateralized by commercial real estate mortgage loans, of a VIE. Variable Interest Entity, Commercial Mortgage Backed Securities [Member] CMBS Exposure to loss Represents the exposure to loss on investments that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE). Variable Interest Entity, Exposure to Loss Variable Interest Entity, Junior Subordinated Debt [Member] Junior subordinated notes Represents the investment in junior subordinated notes, of a VIE. Variable Interest Entity, Loan and Investment [Member] Loans and equity investments Represents the loan and investment in a VIE. Represents the loan in a VIE. Variable Interest Entity, Loan [Member] Loans Variable Interest Entity Not Primary Beneficiary Number Number of VIEs where the reporting entity is not VIE's primary beneficiary Represents the number of variable interest entities (VIEs) in which the entity is not a primary beneficiary. Represents the number of collateralized debt obligation subsidiaries in which the entity is a primary beneficiary. Number of consolidated CDO subsidiaries which qualify as VIEs where the reporting entity is primary beneficiary Collateralized Debt Obligation, Subsidiaries, Number Number of collateralized debt obligation subsidiaries Represents the number of collateralized loan obligation subsidiaries in which the entity is a primary beneficiary. Number of consolidated CLO subsidiaries which qualify as VIEs where the reporting entity is primary beneficiary Collateralized Loan Obligation, Subsidiaries, Number Number of collateralized loan obligation subsidiaries Carrying amount of the total liabilities that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE). Variable Interest Entity Real Estate Debt Exposure Exposure to real estate debt Variable Interest Entity, Residential Mortgage Backed Securities [Member] RMBS Represents the investment in securities collateralized by residential real estate mortgage loans, of a VIE. Warehousing Credit Facility Due December 2013 Three [Member] Warehousing credit facility due December 2013, three Represents information pertaining to the three warehousing credit facility expiring in December 2013. Warehousing Credit Facility Due February 2014 [Member] $50.0 million warehousing credit facility Represents information pertaining to the warehousing credit facility, which will expire in February 2014. $110.0 million warehousing credit facility Represents information pertaining to warehousing credit facility expiring in April 2015. Warehousing Credit Facility Due April 2015 [Member] Warehousing Credit Facility Due June 2014 [Member] $45.0 million warehousing credit facility Represents information pertaining to the warehousing credit facility expiring in June 2014. Warehousing Credit Facility One [Member] $12.6 million warehousing credit facility Represents information pertaining to the warehousing credit facility one. Warehousing Credit Facility Two [Member] $17.3 million warehousing credit facility Represents information pertaining to the warehousing credit facility two. West 450 Street 33 [Member] 450 West 33rd Street Represents the investment in 450 West 33rd Street, an equity affiliate of the entity accounted under the cost method of accounting. West Shore Cafe [Member] West Shore Cafe Represents the investment in West Shore Cafe, an equity affiliate of the entity accounted under the equity method of accounting. Preferred Stock Issued during Period, Value, New Issues Issuance of preferred stock Represents the equity impact of the value of new preferred stock issued during the period. Preferred Stock Issued during Period, Shares, New Issues Issuance of preferred stock (in shares) Represents the number of new preferred stock shares issued during the period. Represents the cash outflow for costs incurred directly with the issuance of preferred stock. Payment of Expenses on Issuance of Preferred Stock Expenses paid on issuance of preferred stock Impaired Financing Receivable Adjustments Made to Appraisals Adjustments made to appraisals Represents the amount of impaired financing receivable adjustments made to appraisals during the period. Debt Instrument Covenants Amount Payable on Default of Senior Debt Amount payable on default of senior debt Represents the amount payable on default of senior debt under debt instrument. Class of Warrant or Right, Number of Securities Called by Warrants or Rights Exercised Warrants exercised (in shares) Represents the specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to exercise from the issuer at a specific price, on or before a certain date. Private REIT preferred stock Private REIT Preferred Stock [Member] Outstanding private REIT preferred stock. Number of Loans Acquired in Transfer Accounted for as Held To Maturity Debt Securities Number of investments acquired with deteriorated credit quality had accretable yields Represents the number of investments acquired with deteriorated credit quality having accretable yields. Chief Financial Officer of Affiliated Entity [Member] Chief financial officer of the affiliated entity Represents information pertaining to the chief financial officer of the affiliated entity. The maximum LIBOR rate for the variable rate of the loans receivable. Libor cap (as a percent) Loans Receivable Libor Cap Preferred Stock Amount of Accrued Dividend Distributions accrued on preferred stock Aggregate amount of preferred dividend accrued. Future cash outflow to pay for preferred stock offering expenses that have occurred. Preferred Stock Offering Expenditures Incurred But Not Yet Paid Accrued and unpaid expenses on preferred stock offerings Collateralized Loan Obligation Offering Expenditures Incurred but not yet Paid Accrued and unpaid expenses on CLO offerings Future cash outflow to pay for collateralized loan obligation offering expenses that have occurred. Future cash outflow to pay for common stock offering expenses that have occurred. Common Stock Offering Expenditures Incurred But Not Yet Paid Accrued and unpaid expenses on common stock offerings Preferred dividend accrued Accrued Preferred Dividend Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to preferred dividend. Number of Loans, Unpaid Principal Balance [Axis] Information pertaining to number of loans with an unpaid principal balance. Number of Loans, Unpaid Principal Balance [Domain] Represents information pertaining to number of loans with an unpaid principal balance. Maturity Date April 2015 [Member] Maturity date of April 2015 Represents information pertaining loans receivable with the maturity date as April 2015. Maturity date of March 2015 Maturity Date March 2015 [Member] Represents information pertaining loans receivable with the maturity date as March 2015. Four Loans Collateralized by A Land Development Project [Member] Four loans collateralized by a land development project Represents four loans collateralized by a land development project with an unpaid principal balance. Seven Loans Collateralized by A Land Development Project [Member] Seven loans collateralized by a land development project Represents Seven loans collateralized by a land development project with an unpaid principal balance. Impaired Financing Receivable, Weighted Average, Accrual Rate of Interest Weighted average accrual rate of interest (as a percent) Represents the weighted average accrual rate of interest. Loans Receivable, Number of Options to Extend Loan Number of options to extend loan Represents the number of options to extend the loans receivable. Debt Instrument, Interest Rate, Period [Axis] Information pertaining to period during which specified interest rate is applicable on borrowings. Debt Instrument, Interest Rate, Period [Domain] Represents information pertaining to period during which specified interest rate is applicable on borrowings. First Year [Member] First year Represents information pertaining to first year of loan. Thereafter [Member] Thereafter Represents information pertaining to period after first year of loan. Related Party Transaction, Number of Bridge Loans Originated Number of bridge loans originated Represents the number of bridge loan purchased from the related party. Personal Guaranty Represents the amount of a legally binding contract by a person to repay a debt in the case a company defaults. Personal guaranty Line of Credit Facility, Unused Capacity [Domain] Represents the details of unused credit capacity under the credit facility. First 5.0 million Represents information pertaining to the first 5.0 million unused credit capacity under the credit facility. Line of Credit Facility, Unused Capacity, First 5.0 Million [Member] Line of Credit Facility, Unused Capacity, Excess of 5.0 Million [Member] Excess of 5.0 million Represents information pertaining to the excess of 5.0 million unused credit capacity under the credit facility. Line of Credit Facility, Extension Fee, Percentage Extension fee (as a percent) The fee, expressed as a percentage of the line of credit facility, for extension of maturity of credit facility. Line of Credit Facility Fee for Not Extending Fee for not extending line of credit The fee for not extending maturity of credit facility. Threshold for non-use fee Line of Credit Facility Unused Capacity Threshold for Basis of Commitment Fee The threshold for the calculation of non-use fee for available but unused credit capacity under the credit facility. Available For Sale Securities, Gross Unrealized Gain (Loss) Accumulated in Investments Net amount of the difference between the fair value and market value on investments in available-for-sale securities. Cumulative Unrealized Gain Held To Maturity Securities, Accumulated Unrecognized Holding Loss This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized as held-to-maturity. Unrealized Loss Held To Maturity Securities, Accumulated Unrecognized Holding Gain Amount of accumulated unrecognized gain on investments in held-to-maturity securities. Unrealized Gain Provision for loan losses Represents the gross amount charged against earnings during the period as credit losses (bad debt expense) based on review of the loan and lease portfolio and application of the methodology for estimating credit losses. Provision for Loan and Lease Losses Gross Provision for loan losses Impaired loans, provision for loan loss Number of real estate properties classified as held-for-sale Represents the number of real estate properties classified as held-for-sale within the portfolio. Number of Real Estate Properties Classified as Held For Sale Redemption of investment in preferred shares, net Represents the cash inflows from redemption of investment in preferred shares during the period. Redemption of Investment in Preferred Shares Amount recorded in capital gain from the redemption of preferred stock Mortgage Notes Payable Real Estate Owned Transferred to Real Estate Held for Sale Mortgage note payable - real estate owned transferred to held-for-sale Represents the value of liability for mortgage notes payable by the reporting entity, transferred to real estate held-for-sale in noncash transactions during the reporting period. Secured Junior Participating Loans Expiring March 2014 [Member] Junior loan participation, secured by the Company's interest in a first mortgage loan with a principal balance of $1.3 million, participation interest was based on a portion of the interest received from the loan which has a fixed rate of 9.57% Represents information pertaining to the secured junior participating loans, expiring in March 2014. Consolidated Entity [Member] Consolidated entity Represents information pertaining to the consolidated entity. Investment in Lightstone Value Plus REITLP through Consolidated Entity [Member] Investment through consolidated entity Represents information pertaining to the investment in Lightstone Value Plus REIT L.P. through a consolidated entity. Schedule of real estate owned Tabular disclosure of real estate owned. Schedule of Real Estate Owned [Table Text Block] Share-based compensation expense Allocated Share-based Compensation Expense Annual base compensation Schedule of real estate held-for-sale Tabular disclosure of real estate held-for-sale. Schedule of Real Estate Held for Sale [Table Text Block] Mortgage Loans on Real Estate Sub Type of Property [Axis] Information by sub-type of real estate property. Mortgage Loans on Real Estate Sub Type of Property [Domain] Represents the name of sub-type of real estate property. Building and Intangible Assets [Member] Building and intangible assets Represents information pertaining to the building and intangible assets. Revenue: Disposal Group Including Discontinued Operation Revenue [Abstract] Disposal Group Including Discontinued Operation Expenses [Abstract] Expenses: Class of Warrants Exercisable at Dollars 3.50 [Member] Warrants exercisable at $3.50 Represents the class of warrants, which are exercisable at exercise price of 3.50 dollars. Class of Warrants Exercisable at Dollars 4.00 [Member] Warrants exercisable at $4.00 Represents the class of warrants which are exercisable at exercise price of 4.00 dollars. Class of Warrants Exercisable at Dollars 5.00 [Member] Warrants exercisable at $5.00 Represents the class of warrants which are exercisable at exercise price of 5.00 dollars. Management Agreement Success Based Payments Amount of success-based payments made under the terms of management agreement. Success-based payments made Related Party Transaction, Number of Bridge Loans Paid Off Number of bridge loans paid off Represents the number of bridge loans paid off to the related party. Redemption of Preferred Limited Partnership Interest and Satisfaction of Note Payable Redemption of preferred limited partnership interest and satisfaction of note payable Represents the amount of redemption of preferred limited partnership interest and satisfaction of note payable through noncash transactions. Mortgage Notes Payable Real Estate Owned and Held for Sale Mortgage note payable - real estate owned and held-for-sale Represents the liability for mortgage notes payable by the reporting entity in connection with the acquisition of real property and held-for-sale. Maturity Date September 2014 [Member] Maturity date of September 2014 Represents information pertaining to the maturity date of September 2014 of loans receivable. Loan Carrying Value Loan Carrying Value The carrying value of loans derived after deducting unearned revenue and other holdbacks. Balance at beginning of year Balance at end of year Operating Partnership Structured Finance Assets Contribution Amount for Equal Equity Ownership Structured finance assets contribution amount for commensurate equity ownership under operating partnership Represents the amount of structured finance assets contributed for equal equity ownership under operating partnership. Represents the amount of borrowings supported by equity contributed for equal equity ownership under operating partnership. Operating Partnership Borrowings Contribution Amount for Equal Equity Ownership Borrowings supported by equity contributed for commensurate equity ownership under operating partnership Proceeds from Operating Partnership Investments Equity Contribution Equity investment for commensurate equity ownership under operating partnership The cash inflow associated with the amount received from equity contribution made under operating partnership. Purchase Price Allocation Valuation Period Following Real Estate Property Acquisition Period following the date of acquisition in which the entity finalizes the purchase price allocation of the real estate properties acquired Represents the period following the date of acquisition which the entity finalizes the purchase price allocation of the real estate properties acquired. Real Estate Owned and Held for Sale [Abstract] Real Estate Owned and Held-For-Sale Warehousing Credit Facility due November 2015 [Member] $33.0 million warehousing credit facility Represents information pertaining to the warehousing credit facility expiring in November 2015. Secured Junior Participating Loans Expiring October 2018 [Member] Junior loan participation, maturity of October 2018, secured by the Company's interest in a mezzanine loan with a principal balance of $3.0 million, participation interest is a fixed rate of 13.00% Represents information pertaining to the secured junior participating loans, expiring in October 2018. Impairment loss on real estate owned Represents the amount of impairment loss from real estate owned. Impairment of Real Estate Owned Satisfaction of Note Payable from Real Estate Partnership Satisfaction of notes payable from real estate partnership Represents the amount of satisfaction of note payable from real estate partnership through noncash transactions. Redemption of Preferred Investment from Real Estate Partnership Redemption of preferred investment from real estate partnership Represents the amount of redemption of preferred investment from real estate partnership through noncash transactions. Impaired Real Estate Owned Represents the amount of impaired real estate owned as of balance sheet date. Impaired real estate owned Summary of the changes in the allowance for loan losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Land Held as Collateral Land investment Represents the amount of land held as collateral as of balance sheet date. Real Estate Real Estate Owned Properties Weighted Average Daily Rate Amount Owned Properties Weighted Average Daily Rate Amount Amount of weighted average daily rate of properties Represents the amount of weighted average daily rate of properties classified as real estate owned. Real Estate Owned Properties Weighted Average Revenue Per Available Room Amount Represents the amount of weighted average revenue per available room of properties classified as real estate owned. Amount of weighted average daily rate of properties Several Loans Written Off [Member] Write-off of several loans Represents information pertaining to the several loans written off. Transfer of land held as collateral Represents information pertaining to the transfer of land held as collateral. Transfer of Land Held as Collateral [Member] Two Loans from Properties Transferred and Purchased Out of Bankruptcy [Member] Represents information pertaining two loans on properties that were transferred to the Company by the owner, as well as purchased by the Company out of bankruptcy. Two loans transferred to the company and purchased out of bankruptcy Available for Sale Securities, Gross Unrealized Gain Accumulated in Investments Cumulative Unrealized Gain Amount of accumulated unrealized gain before deducting unrealized loss on investments in available-for-sale securities impacting investments. Available for Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated in Investments Cumulative Unrealized Loss Amount of accumulated unrealized loss on securities classified as available-for-sale securities, impacting investments. Available for Sale Securities Financed with Repurchase Agreement with Financial Institution Amount Investments financed with a repurchase agreement with a financial institution Represents the amount provided by the financial institution to the entity on purchase of investment securities categorized as available-for-sale securities. The amount of the tax credit carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws that will expire in year four. Tax Credit Carryforward Amount That Will Expire in Year Four Federal and state capital loss carryover that will expire in 2017 Tax Credit Carryforward Amount That will Expire in Year Six Federal and state capital loss carryover that will expire in 2019 The amount of the tax credit carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws that will expire in year six. Mortgage Loans on Real Estate Face Amount of Mortgages Modified Modified loans Amount of mortgage loans on real estate which were modified. The amount of additions to mortgage loans due to reclassification of allowance for loan loss to other assets during the reporting period. Mortgage Loans on Real Estate Reclassification of Allowance for Loan Loss to Other Assets Charge-off on loan converted to other assets Financing Receivable Modifications Made Considered Trouble Debt Restructurings that Subsequently Considered Non Performing Amount of loans considered to be troubled debt restructurings that subsequently considered non-performing Represents the amount of financing receivables that have been modified during the period that the company considered to be troubled debt restructurings that subsequently considered non-performing. Non Financial Instruments Financial Assets Balance Sheet Groupings [Abstract] Non-financial assets: Residential Mortgage Backed Securities Fair Value Disclosure RMBS Represents the fair value of securities collateralized by residential real estate mortgage loans. Deconsolidation of assets from real estate partnership Represents the non cash investing and financing activities in relation to deconsolidation of assets from real estate partnership. Deconsolidation of Assets from Real Estate Partnership Deconsolidation of Liabilities from Real Estate Partnership Deconsolidation of liabilities from real estate partnership Represents the non cash investing and financing activities in relation to deconsolidation of liabilities from real estate partnership. Deconsolidation of Non Controlling Interest from Real Estate Partnership Deconsolidation of noncontrolling interest from real estate partnership Represents the non cash investing and financing activities in relation to deconsolidation of noncontrolling interest from real estate partnership. Reclassification of Land Development Loan to Other Assets Loan converted to other assets Represents the non cash investing and financing activities in relation to reclassification of land development loan to other assets. Allowance for Loan and Lease Losses Charge Offs Reclassification Other Assets Charge-off on loan reclassified to other assets Reflects the amount of loans and leases that have been removed or charged-off, from both loan receivables and the reserve for credit losses due to reclassification to other assets. Charge-off on loan converted to other assets Maturity Date October 2018 [Member] Maturity date of October 2018 Represents the information pertaining loans receivable with the maturity date as October 2018. Related Party Transaction, Amount of Mezzanine Loan Receivable Amount of mezzanine loan purchased from related party Represents the amount of mezzanine loan purchased from the related party. Disposal Group Including Discontinued Operation Gain on Reversal of Accrued Liabilities Gain on reversal of accrued liabilities Represents the amount of gain, resulting from reversal of accrued liabilities of the disposal group, including a component of the entity (discontinued operation). Series C Cumulative Redeemable Preferred Stock 8.50 Percent [Member] 8.50% Series C preferred stock Represents information pertaining to the 8.50 percent Series C cumulative redeemable preferred stock. 8.50% Series C cumulative redeemable preferred stock Line of Credit Facility, Temporary Increase in Maximum Borrowing Capacity Temporary increase in committed line Represents the amount of temporary increase in maximum borrowing capacity under the credit facility. Line of Credit Facility, Uncollateralized Amount Uncollateralized amount Represents the uncollateralized amount under the credit facility. Line of Credit Facility, Commitment Fee Commitment fee Represents the amount of commitment fees under the credit facility. Recoveries of reserves Recoveries Allowance for Loan and Lease Loss, Recovery of Bad Debts Recoveries of reserves CLO III Represents information pertaining to securities collateralized by a pool of assets and which has two-year replacement period, stated maturity date and interest is variable based on one-month LIBOR. Collateralized Loan Obligations Three [Member] Secured Junior Participating Loans Expiring October 2018 One [Member] Junior loan participation, maturity of June 2014, secured by the Company's interest in a mezzanine loan with a principal balance of $3.0 million, participation interest is a fixed rate of 15.00% Represents information pertaining to the secured junior participating loans, expiring in October 2018, one. Maturity Date, March 2016 [Member] Maturity date of March 2016 Represents information pertaining to March 2016 as the maturity date of loans receivable. Maturity Date, June 2014 [Member] Maturity date of June 2014 Represents information pertaining to June 2014 as the maturity date of loans receivable. Number of Newly Formed Wholly Owned Subsidiaries Number of newly-formed wholly-owned subsidiaries Represents the number of newly-formed wholly-owned subsidiaries. Changes in allowance for loan losses Allowance for Loan and Lease Losses [Roll Forward] Secured Junior Participating Loans Expiring March 2016 [Member] Junior loan participation, maturity of March 2016, secured by the Company's interest in a bridge loan with a principal balance of $70.1 million, participation interest is a weighted average variable interest rate of 7.30% Represents information pertaining to the secured junior participating loans, expiring in March 2016. Secured Junior Participating Loans Expiring June 2014 [Member] Junior loan participation, maturity of June 2014, secured by the Company's interest in a mezzanine loan with a principal balance of $3.0 million, participation interest is a fixed rate of 15.00% Represents information pertaining to the secured junior participating loans, expiring in June 2014. Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Addition from Decrease Amount Financed Under Purchase Agreement The increase of financial instruments classified as an asset measured using unobservable inputs from the decrease in the amount financed under the respective repurchase agreement. Addition from decrease in amount financed under repurchase agreement Annual base compensation Annual Base Compensation Payable Represents the amount of annual base compensation payable to an individual. Collateralized Loan Obligations Class C Secured Floating Rate Notes [Member] Class C secured floating rate notes Represents information pertaining to investment grade rated Class C secured floating rate notes issued by the CLO issuing entity. Additional interest expense related to the amortization of the loss Amortization of Deferred Hedge Gains Number of warrants that did not have a dilutive effect (in shares) Impairment charges Asset Impairment Charges Assets Total assets Assets [Abstract] Assets: Total assets Assets, Total [Member] Net unrealized gain recorded in accumulated other comprehensive loss Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax Available-for-sale securities, at fair value (includes $0 and $1,100,000 from consolidated VIEs, respectively) Carrying Value / Estimated Fair Value Available-for-sale Securities Available-for-sale securities Available-for-sale securities, at fair value Collateral Securities, Fair Value Available-for-sale Securities Pledged as Collateral Amortized Cost Carrying value Available-for-sale Securities, Amortized Cost Basis Basis Swaps Basis Swap [Member] Basis of Presentation and Principles of Consolidation Basis of Accounting, Policy [Policy Text Block] Bridge Loans Bridge loan Bridge Loan [Member] Capital Loss Carryforward Capital Loss Carryforward [Member] Carrying Value Reported Value Measurement [Member] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents Cash and Cash Equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Supplemental schedule of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Additions Accretable Yield Accretion Paydowns Beginning balance Ending balance Beginning balance Ending balance Aggregate carrying value of investment with deteriorated credit quality Certain Loans Acquired in Transfer Accounted for as Held-to-maturity Debt Securities, Carrying Amount, Net Chief executive officer Chief Executive Officer [Member] Equity Class of Stock [Line Items] Distributions Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Exercise price (in dollars per share) Warrant exercise price Class of Warrant or Right, Exercise Price of Warrants or Rights Warrants Class of Warrant or Right [Line Items] Class of Stock [Domain] Class of Warrant or Right [Table] Variable Interest Entity, Classification [Domain] Joint venture members Co-venturer [Member] Collateralized loan obligations Collateralized loan obligation Collateralized Loan Obligations [Member] Collateralized debt obligations Collateralized debt obligation (CDO) bond CDO debt CDO Bonds Collateralized Debt Obligations [Member] Commercial mortgage-backed security (CMBS) CMBS Commercial Mortgage Backed Securities [Member] Commercial Commercial Real Estate [Member] Commitments and Contingencies Commitments and contingencies Commitments and Contingencies. Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common Stock Common equity securities Common Stock [Member] Common stock, $0.01 par value: 500,000,000 shares authorized; 52,787,075 shares issued, 50,136,308 shares outstanding at March 31, 2014 and 51,787,075 shares issued, 49,136,308 shares outstanding at December 31, 2013 Common Stock, Value, Issued Common stock, shares issued (in shares) Common Stock, Shares, Issued Dividends declared per common share (in dollars per share) Cash dividend declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Common stock, shares authorized (in shares) Number of shares of common stock authorized for issuance Common Stock, Shares Authorized Dividend Paid Per Share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Common Stock, Shares, Outstanding Common stock, shares outstanding (in shares) Common stock outstanding (in shares) Provision for income taxes Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Deferred tax assets (liabilities): Components of Deferred Tax Assets and Liabilities [Abstract] Comprehensive income attributable to noncontrolling interest Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest Other Comprehensive Income / (Loss) Comprehensive Income, Policy [Policy Text Block] Comprehensive income attributable to Arbor Realty Trust, Inc. common stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Comprehensive income Comprehensive (Loss) Income Concentration Risk Type [Domain] Concentration Risk Benchmark [Domain] Concentration Risk Type [Axis] Concentration Risk Benchmark [Axis] Concentration risk, percentage Concentration Risk, Percentage Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] 2015 Contractual Obligation, Due in Second Year 2018 Contractual Obligation, Due in Fifth Year Schedule of material contractual obligations Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block] 2017 Contractual Obligation, Due in Fourth Year 2014 Contractual Obligation, Due in Next Twelve Months 2016 Contractual Obligation, Due in Third Year Thereafter Contractual Obligation, Due after Fifth Year Contractual Obligations, Payments Due by Period Contractual Obligation, Fiscal Year Maturity [Abstract] Total Contractual Obligation Other joint ventures Investments in Equity Affiliates Cost and Equity Method Investments Disclosure [Text Block] Property operating expenses Cost of Real Estate Revenue Cost method investments Cost Method Investments Credit Facility [Axis] Credit risk concentration Credit Concentration Risk [Member] Credit Rating, Standard & Poor's [Axis] Credit Rating, AM Best [Domain] Credit Rating, AM Best [Axis] State Current State and Local Tax Expense (Benefit) Current tax (benefit) provision: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) Total current tax (benefit) provision Current Income Tax Expense (Benefit) Customer risk concentration Customer Concentration Risk [Member] Qualifying Designated as Hedging Instrument [Member] Variable interest rate, description Description of variable rate basis Debt Instrument, Description of Variable Rate Basis Debt Obligations Debt Covenants Debt Instrument [Line Items] Schedule of Long-term Debt Instruments [Table] Number of warrants issued (in shares) Number of warrants issued Debt Conversion, Converted Instrument, Warrants or Options Issued Face amount of debt instrument re-issued Face amount Debt Instrument, Face Amount Debt, Face Value New note payable Variable rate, spread (as a percent) Weighted average spread (as a percent) Variable rate, spread (as a percent) Debt Instrument, Basis Spread on Variable Rate Debt Obligations Repurchase amount Face Amount Debt Instrument, Repurchased Face Amount Debt Security [Axis] Debt Obligations Debt Disclosure [Text Block] Maturity period (in years) Debt Instrument, Term Period of additional loan obligations Debt term Debt Instrument [Axis] Weighted average note rate (as a percent) Debt, Weighted Average Interest Rate Weighted Average Note Rate (as a percent) Issuance costs Debt Issuance Cost Effective rate (as a percent) Debt Instrument, Interest Rate, Effective Percentage Debt Instrument, Name [Domain] CDO bond and CMBS investments Debt Securities [Member] Interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Decrease in the amount financed on the repurchase agreements Debt Instrument, Increase (Decrease), Net Deferred amount Accrued deferred compensation expense Deferred Compensation Arrangement with Individual, Allocated Share-based Compensation Expense Federal-net of valuation allowance Deferred Federal Income Tax Expense (Benefit) Total deferred tax (benefit) provision Deferred Income Taxes and Tax Credits Deferred tax (benefit) provision: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Unearned revenue Deferred Discounts, Finance Charges and Interest Included in Receivables State-net of valuation allowance Deferred State and Local Income Tax Expense (Benefit) Net deferred tax asset Deferred Tax Assets, Net Deferred revenue Deferred revenue recognized on transfer of control of 450 West 33rd Street property Deferred Revenue Deferred revenue recorded as a result of the guarantee on a portion of the new debt Gross deferred tax assets Deferred Tax Assets, Gross Net operating loss carryforwards Valuation allowance against the deferred tax asset Valuation allowance Deferred Tax Assets, Valuation Allowance Interest in equity affiliates-net Deferred Tax Liabilities, Investment in Noncontrolled Affiliates Depreciation and amortization Depreciation Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation, Amortization and Accretion, Net Derivative financial instruments Derivative Liability Notional Value, classified in Other Assets Derivative Asset, Notional Amount Repurchase financing Derivative Asset, Fair Value, Gross Liability Change in fair value of non-qualifying swaps and linked transactions Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Derivative Instrument [Axis] Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Financial Instruments Derivative financial instruments Forward contract derivatives Derivative Asset Notional Value, classified in Other Liabilities Derivative Liability, Notional Amount Fair Value, classified in Other Assets Derivative Asset, Fair Value, Gross Asset Cap rate (as a percent) Derivative, Cap Interest Rate Fair Value, classified in Other Liabilities Derivative Liability, Fair Value, Gross Liability Change in fair value Derivative, Gain (Loss) on Derivative, Net Net losses in fair value of RMBS investments Derivative, Gain on Derivative Net unrealized losses in fair value of RMBS investments Derivative, Loss on Derivative Count Number of interest rate swaps Derivative, Number of Instruments Held Derivative Contract [Domain] Derivative Financial Instruments Derivative Instruments, Gain (Loss) [Line Items] Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Interest Expense (Effective Portion) Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion) Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Fair value of derivatives in a net liability position Total principal paydowns Derivative, Net Liability Position, Aggregate Fair Value Derivative Instruments, Gain (Loss) [Table] Hedging Activities and Derivatives Derivatives, Policy [Policy Text Block] Derivative Financial Instruments Derivatives, Fair Value [Line Items] Director William C. Green Director [Member] (Loss) income from operations of real estate held-for-sale (Loss) income from operations of real estate held-for-sale Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax Gain on sale of real estate held-for-sale Gain on sale of real estate held-for-sale Gain on sale of real estate Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Discontinued operations Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] Property operating income Disposal Group, Including Discontinued Operation, Operating Income (Loss) Interest expense, discontinued operations Disposal Group, Including Discontinued Operation, Interest Expense Property operating expense Disposal Group, Including Discontinued Operation, Operating Expense Depreciation Disposal Group, Including Discontinued Operation, Depreciation and Amortization Distributions - common stock Dividends, Common Stock Distributions Dividends [Abstract] Dividends [Axis] Total Dividends Paid Dividends, Common Stock, Cash Distributions - preferred stock Distributions declared and paid on preferred shares issued to third parties by its subsidiary REIT Dividends, Preferred Stock Due from related party (includes $0 and $91,988 from consolidated VIEs, respectively) Due from related party Receivable from related party Due from Related Parties Due to related party Due to Related Parties External Credit Rating, Standard & Poor's [Domain] Basic earnings per common share: Basic (loss) earnings per common share: Earnings Per Share, Basic [Abstract] Basic Earnings Per Share, Basic, Other Disclosures [Abstract] Diluted earnings per common share: Diluted (loss) earnings per common share: Earnings Per Share, Diluted [Abstract] Earnings Per Share Earnings Per Share [Text Block] Earnings (Loss) Per Share Earnings Per Share, Policy [Policy Text Block] Diluted Earnings Per Share, Diluted, Other Disclosures [Abstract] Net income attributable to Arbor Realty Trust, Inc. common stockholders (in dollars per share) Earnings Per Share, Basic Net income attributable to Arbor Realty Trust, Inc. common stockholders (in dollars per share) Earnings Per Share, Diluted Earnings Per Share Effective income tax rate (as a percent) Effective Income Tax Rate Reconciliation, Percent Effective income tax rate as a percentage of pretax income or loss differed from the U.S. federal statutory rate Effective Income Tax Rate Reconciliation, Percent [Abstract] State and local income taxes, net of federal tax benefit (as a percent) Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Refund (as a percent) Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Change in valuation allowance (as a percent) Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent U.S. federal statutory rate (as a percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent REIT non-taxable income (as a percent) Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Stockholders' equity Arbor Equity Method Investment, Summarized Financial Information, Equity Excluding Noncontrolling Interests Total revenues Equity Method Investment, Summarized Financial Information, Revenue Total liabilities and deficit Equity Method Investment, Summarized Financial Information, Liabilities and Equity Stockholders' (deficit) equity Equity Method Investment, Summarized Financial Information, Noncontrolling Interest Equity investment, balance Equity Investment Equity Method Investments Total assets Equity Method Investment, Summarized Financial Information, Assets Statements of Operations: Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] Voting interest in entities accounted for primarily under the equity method (as a percent) Ownership interest (as a percent) Equity Method Investment, Ownership Percentage Ownership percentage Retained interest (as a percent) Gain on exchange of profits interest Gain on the sale of an equity method investment Equity Method Investment, Realized Gain (Loss) on Disposal Condensed Combined Balance Sheets Equity Method Investment, Summarized Financial Information [Abstract] Net (loss) income Equity Method Investment, Summarized Financial Information, Net Income (Loss) Revenue: Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) [Abstract] Equity Component [Domain] Liabilities: Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract] Total liabilities Equity Method Investment, Summarized Financial Information, Liabilities Assets: Equity Method Investment, Summarized Financial Information, Assets [Abstract] Distributions of operations from equity affiliates Proceeds from equity affiliates Proceeds from Equity Method Investment, Dividends or Distributions Total stockholders' (deficit) equity Equity Method Investment Summarized Financial Information, Equity Investments in Equity Affiliates Equity Method Investments, Policy [Policy Text Block] Fair Value Estimated Fair Value Estimate of Fair Value Measurement [Member] Repayment of outstanding debt Amount of debt instrument purchased from third party investor Extinguishment of Debt, Amount Measurement Frequency [Axis] Cumulative default rate (as a percent) Fair Value Inputs, Probability of Default Fair Value Measurements, Recurring and Nonrecurring [Table] Gain (loss) on sale of investments and settlement of derivative financial instruments Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings Fair Value, Hierarchy [Axis] Discount rate (as a percent) Fair Value Inputs, Discount Rate Capitalization rate (as a percent) Fair Value Inputs, Cap Rate Recurring basis Fair Value, Measurements, Recurring [Member] Schedule of quantitative information about Level 3 Fair Value Measurements on a recurring and non-recurring basis Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Fair Value Inputs, Assets, Quantitative Information [Table] Paydowns Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Fair value of these assets and liabilities Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] Sales and settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Fair Value, Measurement Frequency [Domain] Asset Class [Axis] Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table] Quantitative information about Level 3 Fair Value Measurements on a recurring and non-recurring basis Fair Value Inputs, Assets, Quantitative Information [Line Items] Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Measurement Basis [Axis] Net accretion and amortization Fair Value Measurement Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Schedule of fair value of assets and liabilities Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Revenue growth rate (as a percent) Fair Value Inputs, Long-term Revenue Growth Rate Fair Value Nonrecurring basis Fair Value, Measurements, Nonrecurring [Member] Fair Value Hierarchy [Domain] Adjustments to fair value: Fair Value, Adjustment Disclosure [Abstract] Asset Class [Domain] Schedule of certain financial and non-financial assets measured at fair value on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Fair Value Disclosures [Text Block] Financial assets Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value of Financial Instruments Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Reconciliation of the beginning and ending balances of financial assets measured at fair value on a recurring basis using Level 3 inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, by Balance Sheet Grouping [Table] Fair Value Measurement [Domain] Schedule of financial assets measured at fair value on a recurring basis using Level 3 inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Summary of the carrying values and the estimated fair values of the Company's financial instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) Net changes in fair value Balance at the end of the period Balance at the beginning of the period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Other income, net Other Income Fees and Commissions, Other Loans, Investments and Securities Finance, Loans and Leases Receivable, Policy [Policy Text Block] Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Non-performing loans by asset class Financing Receivable, Recorded Investment, Past Due [Line Items] Troubled debt restructurings by asset class Financing Receivable, Modifications [Line Items] Carrying Value Financing Receivable, Recorded Investment, Nonaccrual Status Greater Than 90 Days Past Due Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due Revenue Recognition Financing Receivable, Impaired [Line Items] Summary of the loan portfolio's weighted average internal risk ratings and LTV ratios by asset class Financing Receivable Credit Quality Indicators [Table Text Block] First mortgage First Mortgage [Member] First lien mortgage Forward Contracts Derivative Financial Instruments Forward Contracts [Member] Forward Contract Derivatives Gain on sale of securities Gain on sale of securities Gain (Loss) on Sale of Securities, Net Gain on extinguishment of debt Gain on extinguishment of debt Gain Gains (Losses) on Extinguishment of Debt Hedging Designation [Axis] Hedging Designation [Domain] Amortized Cost Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment Maturing after five years through ten years Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Maturing after one year through five years Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value Securities held-to-maturity, net Carrying Value Held-to-maturity Securities Maturing within one year Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value Maturing after ten years Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Fair Value Summary of the company's securities classified as held-to-maturity Held-to-maturity Securities [Table Text Block] Net gain on sale of investments Held-to-maturity Securities, Sold Security, Realized Gain (Loss) Aggregate carrying value of investments sold Held-to-maturity Securities, Sold Security, at Carrying Value Securities held-to-maturity, net Estimated Fair Value Net fair value Held-to-maturity Securities, Fair Value Hotel Portfolio Hotel [Member] Hotel Held-to-maturity securities Held-to-maturity Securities [Member] Impaired Loans, Allowance for Loan Losses, Loss on Sale and Restructuring of Loans and Charge-offs Impaired Financing Receivable, Policy [Policy Text Block] Average Recorded Investment Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Summary of the company's impaired loans by asset class Impaired Financing Receivables [Table Text Block] Interest Income Recognized Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method Unpaid principal balance on loans Impaired Financing Receivable, Unpaid Principal Balance Impaired loans, net Impaired loans Impaired Financing Receivable, Recorded Investment Allowance for Loan losses Impaired Financing Receivable, Related Allowance Unpaid Principal Balance Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Impairment loss on real estate held-for-sale Impairment of Real Estate Impairment loss on real estate held-for-sale Income from continuing operations, net of noncontrolling interest and preferred stock dividends (in dollars per share) Income from continuing operations, net of noncontrolling interest and preferred stock dividends, per common share (Loss) income from continuing operations, net of noncontrolling interest (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share (Loss) income from equity affiliates Income (loss) from equity affiliates Income (loss) from equity affiliates Income from equity affiliates Income (Loss) from Equity Method Investments Income from continuing operations, net of noncontrolling interest and preferred stock dividends Income (Loss) from Continuing Operations Attributable to Parent Income (loss) before benefit from income taxes (Loss) income before (provision) benefit for income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Net income attributable to noncontrolling interest Income attributable to noncontrolling interest Income (Loss) Attributable to Noncontrolling Interest Income (loss) from discontinued operations (in dollars per share) Income (loss) from discontinued operations per common share (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share CONSOLIDATED STATEMENTS OF INCOME Income Statement Location [Axis] Income Taxes Income Taxes Income from continuing operations, net of noncontrolling interest and preferred stock dividends (in dollars per share) Income from continuing operations, net of noncontrolling interest and preferred stock dividends, per common share (Loss) income from continuing operations, net of noncontrolling interest (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Income (loss) from discontinued operations Income (loss) from discontinued operations Property operating income, discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Income (loss) from discontinued operations Income Taxes Income Tax Disclosure [Text Block] Income Statement Location [Domain] Income (loss) from discontinued operations (in dollars per share) Income (loss) from discontinued operations per common share (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Income tax receivable for the expected refund of income taxes paid by a taxable REIT subsidiary Income Taxes Receivable Benefit from income taxes Total (benefit) provision Benefit (provision) for income taxes Income Tax Expense (Benefit) Cash used for taxes Income Taxes Paid Income from continuing operations Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Income Taxes Income Tax, Policy [Policy Text Block] Due to/from related party Increase (Decrease) in Due from Related Parties, Current Deferred fees Increase (Decrease) in Deferred Revenue Other liabilities Increase (Decrease) in Other Operating Liabilities Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Other assets Increase (Decrease) in Other Operating Assets Change in restricted cash Increase (Decrease) in Restricted Cash Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Dilutive effect of warrants (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Interest expense Interest expense Interest Expense Interest income recorded Interest Income, Related Party Net interest income Interest income Interest Income, Operating Net interest income Net interest income Interest Income (Expense), Net Interest expense expected to be reclassified from qualifying cash flow hedges over the next twelve months Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Cash used to pay interest Interest Paid Interest Rate Swaps Interest Rate Swap [Member] LIBOR Caps Interest Rate Cap [Member] Interest Expense Interest expense Interest Expense [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Real estate held-for-sale, net (includes $0 and $2,550,000 from consolidated VIEs, respectively) Real estate held-for-sale, net Inventory, Real Estate, Held-for-sale Premium amortized/accretion of discount into interest income Net interest income Investment Income, Net, Amortization of Discount and Premium Premium amortized into interest income Investments [Domain] Fair value of real estate owned Investment Owned, at Fair Value Number of shares of common stock purchased Investment Owned, Balance, Shares Investment Type [Axis] Investment Holdings [Table] Investments in equity affiliates Investment in Equity Affiliates Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Investment in Equity Affiliates Investments in and Advances to Affiliates [Line Items] Summary of the company's investments in equity affiliates Investments in and Advances to Affiliates [Table Text Block] Securities Investments in and Advances to Affiliates [Table] Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Junior Participations Loans Junior Loans [Member] Junior subordinated notes Junior Subordinated Debt [Member] Junior notes Junior subordinated notes to subsidiary trust issuing preferred securities Junior subordinated notes Debt Carrying Value Debt Carrying Value Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Employee compensation and benefits Labor and Related Expense Land Land and Land Improvements [Member] Total liabilities and equity Liabilities and Equity Total liabilities Liabilities Liabilities and Equity: Liabilities and Equity [Abstract] Commitment fee upon closing (as a percent) Commitment fee (as a percent) Line of Credit Facility, Commitment Fee Percentage Non-use fee (as a percent) Commitment fee on the undrawn portion (as a percent) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Committed line Revolving note amount Line of Credit Facility, Maximum Borrowing Capacity Fixed interest rate (as a percent) Line of Credit Facility, Interest Rate at Period End Outstanding balance of facility Line of Credit Facility, Amount Outstanding Litigation Case [Domain] Litigation Case [Axis] Impaired Loans, Allowance for Loan Losses, Loss on Sale and Restructuring of Loans and Charge-offs Loans and Leases Receivable Disclosure [Abstract] Investments acquired Base spread (as a percent) Loans Receivable, Basis Spread on Variable Rate Base rate Loans Receivable, Description of Variable Rate Basis Loan loss reserves related to VIEs Allowance for loan losses Allowance at beginning of the period Allowance at end of the period Provision for loan losses Loans and Leases Receivable, Allowance Amount of bridge loans paid off Loans and Leases Receivable, Related Parties, Collections Loan held-for-sale Unpaid principal balance of loans classified as held-for-sale Loans and Investments Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Fair value Loans Receivable, Fair Value Disclosure Long-term Debt Aggregate outstanding balance of related party debt Outstanding debt Fixed interest rate (as a percent) Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Loss Contingency, Nature [Domain] Loss Contingencies [Table] Number of defendants Loss Contingency, Number of Defendants Total damages that the plaintiff is seeking Loss Contingency, Damages Sought, Value Litigation Loss Contingencies [Line Items] Loss Contingency Nature [Axis] Number of lawsuits or complaints filed Loss Contingency, New Claims Filed, Number Major Types of Debt Securities [Domain] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Customer [Axis] Maximum Less than Maximum [Member] Minimum Minimum [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Decrease in non-controlling interest Distributions attributable to noncontrolling interest Distribution to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Noncontrolling Interest [Table] Voting interest owned by the company for consolidation (as a percent) Noncontrolling interest in consolidated entity Noncontrolling interest in the entity Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Third party's interest in the equity of a consolidated subsidiary Fixed interest rate, maximum (as a percent) Mortgage Loans on Real Estate, Maximum Interest Rate in Range Loan converted to other assets Mortgage Loans on Real Estate, Other Deductions SCHEDULE IV - LOANS AND OTHER LENDING INVESTMENTS Mortgage Loans on Real Estate, by Loan Disclosure [Text Block] Carrying Amount Subject to Delinquent Interest Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans Wtd. Avg. Pay Rate (as a percent) Fixed interest rate (as a percent) Weighted average variable interest rate (as a percent) Preferred interest in a joint venture (as a percent) Mortgage Loans on Real Estate, Interest Rate Preferred interest in a joint venture (as a percent) Mortgage Loans on Real Estate, Loan Category [Domain] New mortgage note payable assumed New loan originations Mortgage Loans on Real Estate, New Mortgage Loans Mortgage Loans on Real Estate, Loan Type [Domain] Secured amount of loan Mortgage Loans on Real Estate SCHEDULE IV - LOANS AND OTHER LENDING INVESTMENTS Mortgage Loans on Real Estate Schedule [Table] Loans and Investments Mortgage Loans on Real Estate [Line Items] Loans converted to real estate owned Mortgage Loans on Real Estate, Foreclosures Loan payoffs Mortgage Loans on Real Estate, Collections of Principal Loans and investments, net (includes $1,034,066,873 and $1,196,434,032 from consolidated VIEs, respectively) Loans and investments, net Loans and investments, net Mortgage Loans on Real Estate, Commercial and Consumer, Net Principal balance Loan amount retained by related party Mortgage Loans on Real Estate, Face Amount of Mortgages Face value Fixed interest rate, minimum (as a percent) Mortgage Loans on Real Estate, Minimum Interest Rate in Range Number of loans Loan Count Mortgage Loans on Real Estate, Number of Loans Real Estate, Type of Property [Axis] Mortgage Loans on Real Estate, Loan Type [Axis] Mortgage Loans on Real Estate, Description, Loan Category [Axis] Loans to VIEs Carrying value of loans before loan loss reserves Additional preferred equity investment outstanding Loans and investments, gross Unpaid Principal Balance Mortgage Loans on Real Estate, Carrying Amount of Mortgages Real Estate [Domain] Prior Liens Mortgage Loans on Real Estate, Prior Liens Federal income tax basis Mortgage Loans on Real Estate, Federal Income Tax Basis Amount of loans extended Mortgage Loans on Real Estate, Renewed and Extended, Amount Reconciliation of the Company's loans and investments carrying amounts Movement in Mortgage Loans on Real Estate [Roll Forward] Non-performing loans Non-performing Nonperforming Financing Receivable [Member] Customer [Domain] Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net income attributable to Arbor Realty Trust, Inc. common stockholders Net (loss) income Net Income (Loss) Available to Common Stockholders, Basic Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net cash (used in) / provided by financing activities Net Cash Provided by (Used in) Financing Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Assumption of mortgage notes payable - real estate owned Notes Assumed Notes payable Notes Payable, Fair Value Disclosure Notes payable Notes Payable, Other Payables [Member] Debt Carrying Value Notes Payable Number of real estate owned properties Number of properties owned Number of Real Estate Properties Non-controlling Interest Noncontrolling Interest [Member] Noncontrolling Interest Noncontrolling Interest Non-Qualifying Not Designated as Hedging Instrument [Member] Office Office building Office Building [Member] Other expenses: Operating Expenses [Abstract] Total other expenses Total other expenses Operating Expenses Operating Loss Carryforwards [Table] Income Taxes Operating Loss Carryforwards [Line Items] Federal and state net operating and capital loss carryforwards Operating Loss Carryforwards Description of Business Description of Business Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Amount of net unrealized loss recorded in accumulated other comprehensive loss due to a reclassification of securities Net unrealized gain on securities transferred to available-for-sale from held-to-maturity Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Net of Tax Net realized losses on derivatives designated as cash flow hedges Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Realization of unrealized gain reclassified out of accumulated other comprehensive loss Reclassification of unrealized gain on securities available-for-sale realized into earnings Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Net realized gain on sale of available-for-sale investments Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Reclassification of net realized loss on derivatives designated as cash flow hedges into earnings Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Other assets Other assets (includes $18,907,215 and $19,861,310 from consolidated VIEs, respectively) Other Assets Other revenue: Component of Operating Income [Abstract] Unrealized loss on securities available-for-sale Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Unrealized loss on securities available-for-sale, net Unrealized loss on derivative financial instruments Unrealized loss on derivative financial instruments, net Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Total other revenue Total other revenue Other Income Other liabilities Other liabilities (includes $12,228,728 and $13,944,737 from consolidated VIEs, respectively) Other Liabilities Other Income Other income Other Income [Member] Summary of the company's non-performing loans by asset class Past Due Financing Receivables [Table Text Block] Total Arbor Realty Trust, Inc. Stockholders' Equity Parent [Member] Partnerships Purchases of treasury stock Payments for Repurchase of Common Stock Payments on swaps and margin calls to counterparties Payments for Hedge, Financing Activities Distributions paid on preferred stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Purchase of securities, net Payments to Acquire Marketable Securities Noncontrolling interest Equity investment made Payments to Acquire Equity Method Investments Purchase price Payments to Acquire Available-for-sale Securities Distributions paid on common stock Payments of Ordinary Dividends, Common Stock Contributions to equity affiliates Payments to Acquire Interest in Subsidiaries and Affiliates Expenses paid on issuance of common stock Payments of Stock Issuance Costs Investment in real estate, net Payments to Acquire and Develop Real Estate Payment of deferred financing costs Payments of Financing Costs Distributions paid to noncontrolling interest Equity investment made Payments to Noncontrolling Interests Preferred stock, par value (in dollars per share) Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, liquidation preference (in dollars per share) Preferred Stock, Liquidation Preference Per Share Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) Preferred stock, dividend rate (as a percent) Preferred Stock, Dividend Rate, Percentage Cash dividend declared on redeemable preferred stock (in dollars per share) Preferred Stock, Dividends Per Share, Declared Preferred stock; 8.25% Series A; 7.75% Series B; 8.50% Series C Preferred Stock, Value, Issued Preferred Stock Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, dividend, variable rate basis Preferred Stock, Dividend Payment Rate, Variable Preferred stock, shares authorized (in shares) Number of shares of preferred stock authorized for issuance Preferred Stock, Shares Authorized Preferred Stock Dividends, Income Statement Impact Preferred stock dividends Less: Preferred stock dividends Preferred stock, aggregate liquidation preference Preferred Stock, Liquidation Preference, Value Preferred Stock, Shares Outstanding Preferred stock, shares outstanding (in shares) Preferred Stock Preferred Stock [Member] Prepaid management fee - related party Incentive fee installment recorded as prepaid management fee Prepaid Expense Mr. Ivan Kaufman President [Member] Additional debt Proceeds from Issuance of Debt Newly issued debt instrument Net proceeds from exercise of warrants Proceeds from Warrant Exercises Proceeds received from loan repayments held as collateral Proceeds from Collection of Loans Receivable Distributions from equity affiliates Proceeds from Contributions from Affiliates Change in restricted cash Change in restricted cash Proceeds from (Repayments of) Restricted Cash, Financing Activities Deposits received relating to loan held-for-sale Proceeds from repurchase agreements, loan participations, credit facilities and notes payable Proceeds from sale of properties Proceeds from (Repayments of) Notes Payable Amount of payoff received on mortgage notes payable Receipts on swaps and margin calls from counterparties Proceeds from Hedge, Financing Activities Proceeds from exercise of warrants Proceeds from Issuance of Warrants Proceeds from collateralized debt obligations Proceeds from Issuance of Secured Debt Net proceeds from issuance of preferred stock Proceeds from issuance of preferred stock Proceeds from Issuance of Preferred Stock and Preference Stock Private equity offering, gross proceeds Proceeds from Issuance of Private Placement Proceeds from issuance of common stock Proceeds from issuance of shares under public offering Proceeds from Issuance of Common Stock Proceeds from sale of securities held-to-maturity, net Proceeds from Sale of Held-to-maturity Securities Proceeds from sale of investments Proceeds from sale of securities Proceeds from sale of property Value of property sold by the borrower Proceeds from Sale of Real Estate Total principal paydowns Principal collections on securities, net Proceeds from Sale and Maturity of Marketable Securities Proceeds from sale of loans Proceeds from Sale of Mortgage Loans Held-for-sale Proceeds from sale of available-for-sale securities Proceeds from sale of securities Proceeds from Sale of Available-for-sale Securities Proceeds from sale of real estate, net Proceeds from Sale of Real Estate Held-for-investment Net proceeds from sale of property Legal, financial and accounting fees Professional Fees Net income (loss) Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Provision for loan losses (net of recoveries) Provision for loan losses Provision for Loan and Lease Losses Provision for loan losses Summary Quarterly Consolidated Financial Information - Unaudited Quarterly Financial Information [Text Block] Summary Quarterly Consolidated Financial Information - Unaudited Range [Axis] Range [Domain] Real Estate Owned and Held-For-Sale Real Estate Owned and Held-For-Sale Real Estate Disclosure [Text Block] Real Estate Properties [Domain] Real Estate Property Ownership [Axis] Real estate owned, gross Real Estate Investment Property, at Cost Real estate owned, net Real estate owned, net (includes $80,787,215 and $80,787,215 from consolidated VIEs, respectively) Real Estate Investment Property, Net Real estate owned, net Approximate aggregate carrying value of loans reclassified to real estate owned Less: accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation Carrying value of real estate properties classified as held-for-sale Real Estate Held-for-sale Property operating income Property operating income relating to real estate owned properties Real Estate Revenue, Net Loans and Investments Schedule of reclassifications out of accumulated other comprehensive loss Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Agreements and Transactions with Related Parties Related Party Transactions Disclosure [Text Block] Management Fees: Related Party Fees and Other Arrangements, Limited Liability Company (LLC) or Limited Partnership (LP) [Abstract] Agreements and transactions with related parties Related Party Transaction [Line Items] Management fee - related party Total Management fee Related Party Costs Related Party [Axis] Related Party [Domain] Agreements and Transactions with Related Parties Payoffs and paydowns of collateralized debt obligations Repayments of Secured Debt Paydowns and payoffs of repurchase agreements, loan participations and credit facilities Repayments of Bank Debt Payoff and paydown of mortgage notes payable Repayments of Notes Payable Debt sold to third party Debt paid down due to principal paydowns received Payment of debt Face Amount Repayments of Debt Payoff of notes payable-related party Residential mortgage-backed security (RMBS) RMBS Residential Mortgage Backed Securities [Member] Restricted cash Restricted cash (includes $96,071,579 and $54,051,439 from consolidated VIEs, respectively) Collateral Cash, Restricted Cash Restricted cash due to escrow requirement Restricted Cash and Cash Equivalents Restricted common stock Restricted Stock [Member] Retail Retail Site [Member] Accumulated Deficit Retained Earnings [Member] Accumulated deficit Retained Earnings (Accumulated Deficit) Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Revolving credit facility Revolving Credit Facility [Member] Higher credit risk Risk Level, High [Member] Lower credit risk Risk Level, Low [Member] Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Value of common shares issued to the public (in dollars per share) Sale of Stock, Price Per Share Revenue Sales [Member] Schedule of Impaired Financing Receivable [Table] Schedule of certain financial assets and financial liabilities measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of (benefit) provision for income taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of borrowings Schedule of Debt [Table Text Block] Schedule of difference between effective income tax rate as a percentage of pretax income or loss that and the U.S. federal statutory rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Summary of significant components of deferred tax assets (liabilities) Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Financing Receivables Past Due [Table] Summary of quarterly financial data Schedule of Quarterly Financial Information [Table Text Block] Reconciliation of the numerator and denominator of the basic and diluted EPS computations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Available-for-sale securities Schedule of Available-for-sale Securities [Line Items] Summary of the company's securities classified as available-for-sale Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of dividends declared by the Company (on a per share basis) Schedule of Dividends Payable [Table Text Block] Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits, by Title of Individual and by Type of Deferred Compensation [Table] Schedule of Extinguishment of Debt [Table Text Block] Schedule of face amount and gain on extinguishment of the company's CDO bonds repurchased by bond class Held-to-maturity securities Schedule of Held-to-maturity Securities [Line Items] Schedule of Related Party Transactions, by Related Party [Table] Schedule of derivative financial instruments held by the company Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Summary of the company's variable interests in identified VIEs, of which the company is not the primary beneficiary Schedule of Variable Interest Entities [Table Text Block] Schedule of Variable Interest Entities [Table] Schedule of the effect of the company's derivative financial instruments on the statements of income Derivative Instruments, Gain (Loss) [Table Text Block] Second mortgage Second Mortgage [Member] Collateralized debt obligations (includes $519,770,974 and $639,622,981 from consolidated VIEs, respectively) Debt, Carrying Value Secured debt Secured Debt Collateralized debt obligations Selling and administrative expense Selling, General and Administrative Expenses [Member] Selling and administrative Selling, General and Administrative Expense Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Stock-based compensation Share-based Compensation Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Deferred Compensation Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Stock-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Equity Award [Domain] Balance (in shares) Balance (in shares) Shares, Outstanding Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] AA Standard & Poor's, AA Rating [Member] CCC Standard & Poor's, CCC Rating [Member] AAA Standard & Poor's AAA rating Standard & Poor's, AAA Rating [Member] CCC- Standard & Poor's CCC- rating Standard & Poor's, CCC- Rating [Member] CC Standard & Poor's, CC Rating [Member] BB Standard & Poor's, BB Rating [Member] AA+ Standard & Poor's, AA+ Rating [Member] D Standard & Poor's, D Rating [Member] State taxes for the entity's taxable REIT subsidiaries State and Local Income Tax Expense (Benefit), Continuing Operations Statement [Table] Statement Statement [Line Items] CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Geographical [Axis] CONSOLIDATED STATEMENTS OF CASH FLOWS Equity Components [Axis] CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME CONSOLIDATED BALANCE SHEETS Class of Stock [Axis] Common stock, shares issued as an incentive management fee (in shares) Common stock issued to entity Stock Repurchased and Retired During Period, Value Value of warrants using Black-Scholes method Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants Purchase of treasury stock Stock Repurchased During Period, Value Forfeiture of unvested restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Private equity offering, common stock shares sold Stock Issued During Period, Shares, Conversion of Units Issuance of common stock for management incentive fee Stock Issued Forfeiture of unvested restricted stock Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Stock-based compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Issuance of common stock (in shares) Issuance of common stock for incentive management fee (in shares) Stock Issued During Period, Shares, New Issues Number of fully vested shares issued Stock Issued During Period, Shares, Share-based Compensation, Gross Stock-based compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Purchase of treasury stock (in shares) Stock Repurchased During Period, Shares Issuance of common stock Stock Issued During Period, Value, New Issues Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Arbor Realty Trust, Inc. stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Total Arbor Realty Trust, Inc. stockholders' equity Stockholders' Equity Attributable to Parent Total equity Balance Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Equity Equity Stockholders' Equity Note Disclosure [Text Block] Subsequent event Subsequent Event [Member] Subsequent Event Type [Domain] Subsequent Event Type [Axis] REIT subsidiaries Subsidiaries [Member] Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Federal and state capital loss carryover Tax Credit Carryforward, Amount Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Transfer of held to maturity securities, net to available for sale, net Transfer from Investments Loans converted to real estate owned, net Real Estate Owned, Transfer from Real Estate Owned Treasury stock, shares (in shares) Treasury Stock, Shares Treasury Stock Treasury Stock [Member] Treasury stock, at cost - 2,650,767 shares at March 31, 2014 and December 31, 2013 Treasury Stock, Value Summary of loan modifications and extensions by asset class that the entity considered to be troubled debt restructurings by asset class Troubled Debt Restructurings on Financing Receivables [Table Text Block] Valuation Technique [Axis] Valuation Technique [Domain] Variable Rate [Domain] Variable Rate [Axis] Variable Interest Entities [Axis] Unconsolidated VIEs Variable Interest Entity, Not Primary Beneficiary [Member] Consolidated VIEs Variable Interest Entity, Primary Beneficiary [Member] Variable Interest Entity [Line Items] Variable Interest Entities Carrying Amount Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Weighted average Weighted Average Weighted Average [Member] Weighted average number of shares of common stock outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted average number of common shares outstanding Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted average number of common shares outstanding Weighted Average Number of Shares Outstanding, Diluted