Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN RESIDENTIAL MORTGAGE LOANS - Residential Mortgage Loans Outstanding by Loan Type, Excluding REO (Details)

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INVESTMENTS IN RESIDENTIAL MORTGAGE LOANS - Residential Mortgage Loans Outstanding by Loan Type, Excluding REO (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2018
USD ($)
loan
Dec. 31, 2017
USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Weighted Average Life (Years) 1 year 3 months 21 days  
Threshold period past due (in days) 60 days  
Performing Loans    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Outstanding Face Amount $ 571,381  
Carrying Value $ 520,969 $ 507,615
Loan Count | loan 9,137  
Weighted Average Yield 8.00%  
Weighted Average Life (Years) 4 years 9 months 18 days  
Floating Rate Loans as a % of Face Amount 20.40%  
Loan to Value Ratio (LTV) 80.00%  
Weighted Average Delinquency 7.20%  
Weighted Average FICO 648  
Performing Loans | Ginnie Mae    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Unpaid Principal Balance $ 31,200  
Purchased Credit Deteriorated Loans    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Outstanding Face Amount 237,464  
Carrying Value $ 169,802 183,540
Loan Count | loan 2,216  
Weighted Average Yield 7.70%  
Weighted Average Life (Years) 3 years 1 month 22 days  
Floating Rate Loans as a % of Face Amount 16.20%  
Loan to Value Ratio (LTV) 90.10%  
Weighted Average Delinquency 79.00%  
Weighted Average FICO 596  
Residential Mortgage Loans, held-for-investment    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Outstanding Face Amount $ 808,845  
Carrying Value $ 690,771 691,155
Loan Count | loan 11,353  
Weighted Average Yield 7.90%  
Weighted Average Life (Years) 4 years 3 months 23 days  
Floating Rate Loans as a % of Face Amount 19.20%  
Loan to Value Ratio (LTV) 83.00%  
Weighted Average Delinquency 28.30%  
Weighted Average FICO 633  
Reverse Mortgage Loans    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Outstanding Face Amount $ 15,491  
Carrying Value $ 6,796 6,870
Loan Count | loan 43  
Weighted Average Yield 7.90%  
Weighted Average Life (Years) 6 years 2 months 21 days  
Floating Rate Loans as a % of Face Amount 12.20%  
Loan to Value Ratio (LTV) 131.40%  
Weighted Average Delinquency 64.10%  
Performing Loans    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Outstanding Face Amount $ 1,399,059  
Carrying Value $ 1,422,747 1,071,371
Loan Count | loan 16,935  
Weighted Average Yield 3.90%  
Weighted Average Life (Years) 4 years 4 months 12 days  
Floating Rate Loans as a % of Face Amount 30.60%  
Loan to Value Ratio (LTV) 59.10%  
Weighted Average Delinquency 4.90%  
Weighted Average FICO 680  
Non-Performing Loans    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Outstanding Face Amount $ 756,418  
Carrying Value $ 591,776 647,293
Loan Count | loan 5,838  
Weighted Average Yield 6.10%  
Weighted Average Life (Years) 2 years 10 months 30 days  
Floating Rate Loans as a % of Face Amount 17.90%  
Loan to Value Ratio (LTV) 86.10%  
Weighted Average Delinquency 77.70%  
Weighted Average FICO 590  
Residential Mortgage Loans, held-for-sale    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Outstanding Face Amount $ 2,170,968  
Carrying Value $ 2,021,319 $ 1,725,534
Loan Count | loan 22,816  
Weighted Average Yield 4.70%  
Weighted Average Life (Years) 3 years 10 months 15 days  
Floating Rate Loans as a % of Face Amount 26.00%  
Loan to Value Ratio (LTV) 69.00%  
Weighted Average Delinquency 30.70%  
Weighted Average FICO 648  
Reverse Mortgage Loans    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Interest in reverse mortgage loans 70.00%  
Unpaid principal balance $ 400  
Percentage of loans that have reached a termination event 46.00%  
Reverse Mortgage Loans | Nationstar    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Interest in reverse mortgage loans 30.00%  
Non-Performing Loans | Ginnie Mae    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Unpaid Principal Balance $ 61,100