CONSUMER LOANS - Schedule of Aggregate Unpaid Principal Balance and Aggregate Carrying Value (Details) - Consumer Portfolio Segment - Total New Residential Stockholders’ Equity - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Unpaid Principal Balance	$ 577,124	$ 620,983
Fair Value	638,986	685,575
Fair Value Over (Under) Unpaid Principal Balance	61,862	64,592
Under 90 days
Schedule of Equity Method Investments [Line Items]
Unpaid Principal Balance	567,518	611,978
Fair Value	628,462	675,691
Fair Value Over (Under) Unpaid Principal Balance	60,944	63,713
90 to 119
Schedule of Equity Method Investments [Line Items]
Unpaid Principal Balance	9,606	9,005
Fair Value	10,524	9,884
Fair Value Over (Under) Unpaid Principal Balance	$ 918	$ 879