Quarterly report pursuant to Section 13 or 15(d)

Residential Mortgage Loans Held-for-Investment in Securitization Trusts, at Fair Value (Details)

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Residential Mortgage Loans Held-for-Investment in Securitization Trusts, at Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential Mortgage Loans Held-for-Invesment, Unpaid Principal $ 2,936,810 $ 1,699,748
Residential Mortgage Loans Held-for-Investment, Fair Value Adjustment 41,776 44,998
Residential mortgage loans held-for-investment in securitization trusts, at fair value $ 2,978,586 $ 1,744,746