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BORROWINGS (Details Textual) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Repurchase Agreements [Line Items]    
Repurchase agreements $ 744,847,853us-gaap_SecuredDebtRepurchaseAgreements $ 594,877,852us-gaap_SecuredDebtRepurchaseAgreements [1]
Repurchase Agreements Weighted Average Interest Rate 1.28%oaks_RepurchaseAgreementsWeightedAverageInterestRate 0.99%oaks_RepurchaseAgreementsWeightedAverageInterestRate
Federal Funds Purchased and Securities Sold under Agreements to Repurchase 1,000,000us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase 0us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available 500,000,000us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable  
Secured Debt 66,667us-gaap_SecuredDebt  
Debt, Weighted Average Interest Rate 0.35%us-gaap_DebtWeightedAverageInterestRate  
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged 1,200,000us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1  
Repurchase Agreements [Member]    
Repurchase Agreements [Line Items]    
Repurchase Agreements Weighted Average Interest Rate 1.28%oaks_RepurchaseAgreementsWeightedAverageInterestRate
/ us-gaap_InvestmentTypeAxis
= us-gaap_RepurchaseAgreementsMember		  
Non Agency Linked Transactions [Member]    
Repurchase Agreements [Line Items]    
Repurchase agreements 0us-gaap_SecuredDebtRepurchaseAgreements
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= oaks_NonAgencyLinkedTransactionsMember		 85,497,000us-gaap_SecuredDebtRepurchaseAgreements
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= oaks_NonAgencyLinkedTransactionsMember
Multi Family MBS [Member]    
Repurchase Agreements [Line Items]    
Repurchase agreements   $ 63,796,000us-gaap_SecuredDebtRepurchaseAgreements
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= oaks_MultiFamilyMbsPurchasesMember
[1] At December 31, 2014, the Company had repurchase agreements of $85,497,000 and $63,796,000 that were linked to Non-Agency RMBS and Multi-Family MBS purchases, respectively, and were accounted for as Linked Transactions, and as such, the linked repurchase agreements are not included in the above table. (See Note 3).