Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN MORTGAGE SERVICING RIGHTS AND MORTGAGE SERVICING RIGHTS FINANCING RECEIVABLES - Schedule of Servicing Fee Revenue (Details)

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INVESTMENTS IN MORTGAGE SERVICING RIGHTS AND MORTGAGE SERVICING RIGHTS FINANCING RECEIVABLES - Schedule of Servicing Fee Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Servicing Asset at Amortized Cost [Line Items]        
Less: subservicing expense $ (45,958) $ (55,958) $ (92,555) $ (73,662)
Servicing revenue, net 146,193 170,851 363,429 211,453
Change in fair value of investments in mortgage servicing rights financing receivables (119,103) 5,596 151,973 5,596
MSRs        
Servicing Asset at Amortized Cost [Line Items]        
Servicing fee revenue 131,286 120,432 250,509 185,901
Ancillary and other fees 27,714 24,982 51,061 27,170
Servicing fee revenue and fees 159,000 145,414 301,570 213,071
Amortization of servicing rights (65,439) (64,305) (120,566) (90,601)
Change in valuation inputs and assumptions 52,632 89,742 182,425 88,983
Servicing revenue, net 146,193 170,851 363,429 211,453
MSRs | Mortgage Servicing Rights Financing Receivable | New Residential Mortgage LLC        
Servicing Asset at Amortized Cost [Line Items]        
Servicing fee revenue 192,462 2,675 394,414 2,675
Ancillary and other fees 40,360 75 70,595 75
Less: subservicing expense (65,115) (294) (130,821) (294)
Servicing fee revenue and fees 167,707 2,456 334,188 2,456
Amortization of servicing rights (56,840) (1,127) (105,543) (1,127)
Change in valuation inputs and assumptions (62,263) 6,723 257,516 6,723
Change in fair value of investments in mortgage servicing rights financing receivables $ (119,103) $ 5,596 $ 151,973 $ 5,596