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
6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Schedule of Investments in Mortgage Servicing Rights [Line Items]    
Mortgage servicing rights, at fair value $ 1,749,343 $ 659,483
Weighted Average Life (Years) 1 year 3 months 18 days  
Excess MSRs Investees [Member]    
Schedule of Investments in Mortgage Servicing Rights [Line Items]    
Unpaid Principal Balance $ 56,215,426  
New Residential Interest in Investees 50.00% 50.00%
Amortized Cost Basis $ 257,048  
Mortgage servicing rights, at fair value $ 344,521  
Weighted Average Life (Years) 6 years 6 months  
Original and Recaptured Pools [Member] | Agency [Member] | Excess MSRs Investees [Member]    
Schedule of Investments in Mortgage Servicing Rights [Line Items]    
Unpaid Principal Balance $ 56,215,426  
Investee Interest in Excess MSR 66.70%  
New Residential Interest in Investees 50.00%  
Amortized Cost Basis $ 230,946  
Mortgage servicing rights, at fair value $ 291,907  
Weighted Average Life (Years) 5 years 9 months 13 days  
Recapture Agreements [Member] | Agency [Member] | Excess MSRs Investees [Member]    
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 $ 26,102  
Mortgage servicing rights, at fair value $ 52,614  
Weighted Average Life (Years) 12 years 10 months 3 days