Quarterly report pursuant to Section 13 or 15(d)

Fair Value, Option, Quantitative Disclosures - change in balance (Details)

v3.2.0.727
Fair Value, Option, Quantitative Disclosures - change in balance (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Dec. 31, 2013
Fair Value, Option, Quantitative Disclosures [Line Items]        
Residential mortgage loans held-for-sale, at fair value $ 695,078 $ 535,712 $ 399,841 $ 544,581
Collateralized borrowings in securitization trust, at fair value 1,714,735 1,209,663    
Residential mortgage loans held-for-investment in securitization trusts, at fair value 2,449,199 1,744,746    
Loan Held-for-Sale, Mortgages, Unpaid Principal [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Residential mortgage loans held-for-sale, at fair value 703,966 534,101    
Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status 48,379 26,405    
Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due 45,547 25,263    
Loans Held-for-sale, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Residential mortgage loans held-for-sale, at fair value 695,078 535,712    
Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status 42,212 20,574    
Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due 39,525 19,675    
Loan Held-for-Investment, Mortgages, Unpaid Principal [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status 862 0    
Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due 0 0    
Residential mortgage loans held-for-investment in securitization trusts, at fair value 2,431,573 1,699,748    
Loans Held-for-investment, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status 865 0    
Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due 0 0    
Residential mortgage loans held-for-investment in securitization trusts, at fair value 2,449,199 1,744,746    
Collateralized Borrowings, Unpaid Principal [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Collateralized borrowings in securitization trust, at fair value 1,743,289 1,218,589    
Borrowings [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Collateralized borrowings in securitization trust, at fair value $ 1,714,735 $ 1,209,663