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THE FREMF TRUSTS (Details Textual) (FREMF trusts [Member], USD $)
3 Months Ended
Mar. 31, 2015
FREMF trusts [Member]
 
Balance Sheet  
Investment of Multi-Family Mortgage Backed Securities MBS, Net Carrying Value $ 81,970,663oaks_InvestmentOfMultifamilyMortgageBackedSecuritiesMbsNetCarryingValue
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= oaks_FremfTrustsMember
Multi-family loans held in securitization trusts, unpaid principal balance 1,547,683,642oaks_MultifamilyLoansHeldInSecuritizationTrustsUnpaidPrincipalBalance
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= oaks_FremfTrustsMember
Multi-family securitized debt obligations, unpaid principal balance $ 1,547,683,642oaks_MulitfamilySecuritizedDebtObligationsUnpaidPrincipalBalance
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= oaks_FremfTrustsMember