SERVICER ADVANCE INVESTMENTS - Schedule of Interest Income Related to Investments in Servicer Advances - Others' Interests (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Others
Investment [Line Items]
New Residential’s investment	$ 71,491	$ 173,057
Others’ ownership interest	27.20%	54.20%
Net income in joint venture	$ 11,227	$ 40,136	$ 18,407
Others' ownership interest as a percent of total	47.60%	55.60%	55.50%
Corporate Joint Venture
Investment [Line Items]
New Residential’s investment	$ 262,755	$ 319,248
Others’ ownership interest	72.80%
Net income in joint venture	$ 23,604	$ 72,159	$ 33,180
Average ownership percentage	52.40%	44.40%	44.50%