SERVICER ADVANCE INVESTMENTS - Schedule of Interest Income Related to Investments in Servicer Advances - Others' Interests (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Others
Investment [Line Items]
New Residential’s investment	$ 52,066	$ 71,491
Others’ ownership interest	26.80%	27.20%
Net income in joint venture	$ 1,978	$ 11,227	$ 40,136
Noncontrolling ownership interest in net income	27.40%	47.60%	55.60%
Corporate Joint Venture
Investment [Line Items]
New Residential’s investment	$ 194,513	$ 262,755
Others’ ownership interest	73.20%
Net income in joint venture	$ 7,209	$ 23,604	$ 72,159
Average ownership percentage	72.60%	52.40%	44.40%