Quarterly report pursuant to Section 13 or 15(d)

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

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SERVICER ADVANCE INVESTMENTS - Schedule of Interest Income Related to Investments in Servicer Advances (Details) - Servicer Advance Investments - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Investment [Line Items]        
Interest income, gross of amounts attributable to servicer compensation $ 21,183 $ 83,979 $ 63,731 $ 290,933
Amounts attributable to base servicer compensation (2,347) (38,549) (6,354) (145,055)
Amounts attributable to incentive servicer compensation (7,095) 84,724 (14,255) 300,788
Interest income from Servicer Advance Investments $ 11,741 $ 130,154 $ 43,122 $ 446,666