Quarterly report pursuant to Section 13 or 15(d)

SERVICER ADVANCE INVESTMENTS - Schedule of Interest Income Related to Investments in Servicer Advances - Others' Interests (Details)

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SERVICER ADVANCE INVESTMENTS - Schedule of Interest Income Related to Investments in Servicer Advances - Others' Interests (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Others          
Investment [Line Items]          
Investment in equity $ 58,286   $ 58,286   $ 71,491
Ownership interest 27.20%   27.20%   27.20%
Net income $ 1,056 $ 3,328 $ 2,439 $ 9,148  
Others’ ownership interest as a percent of total 27.20% 54.20% 27.20% 54.20%  
Servicer Advance Investments          
Investment [Line Items]          
Investment in equity $ 214,221   $ 214,221   $ 262,755
Ownership interest 72.80%   72.80%    
Net income $ 3,881 $ 6,140 $ 8,966 $ 16,876