Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN EXCESS MORTGAGE SERVICING RIGHTS - Summary of Excess MSRs Made Through Equity Method Investees (Details)

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INVESTMENTS IN EXCESS MORTGAGE SERVICING RIGHTS - Summary of Excess MSRs Made Through Equity Method Investees (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Schedule of Investments in Mortgage Servicing Rights [Line Items]    
Unpaid Principal Balance $ 21,900,000  
Weighted Average Life (Years) 27 days  
Excess MSRs Investees    
Schedule of Investments in Mortgage Servicing Rights [Line Items]    
Unpaid Principal Balance $ 40,610,966  
New Residential Interest in Investees 50.00% 50.00%
Amortized Cost Basis $ 190,048  
Carrying Value $ 261,808  
Weighted Average Life (Years) 6 years  
Excess MSRs Investees | Agency    
Schedule of Investments in Mortgage Servicing Rights [Line Items]    
New Residential Interest in Investees 50.00%  
Excess MSRs Investees | Agency | Original and Recaptured Pools    
Schedule of Investments in Mortgage Servicing Rights [Line Items]    
Unpaid Principal Balance $ 40,610,966  
Investee Interest in Excess MSR 66.70%  
New Residential Interest in Investees 50.00%  
Amortized Cost Basis $ 170,999  
Carrying Value $ 221,306  
Weighted Average Life (Years) 5 years 3 months 18 days  
Excess MSRs Investees | Agency | Recapture Agreements    
Schedule of Investments in Mortgage Servicing Rights [Line Items]    
Unpaid Principal Balance $ 0  
Investee Interest in Excess MSR 66.70%  
New Residential Interest in Investees 50.00%  
Amortized Cost Basis $ 19,049  
Carrying Value $ 40,502  
Weighted Average Life (Years) 12 years 1 month 6 days