Annual report pursuant to Section 13 and 15(d)

Components of Servicing Revenue (Details)

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Components of Servicing Revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosures Pertaining to Servicing Assets and Servicing Liabilities [Abstract]      
Servicing fee income $ 312,100 $ 197,902 $ 138,430
Ancillary and other fee income 1,280 1,009 1,631
Float income 29,716 10,154 3,518
Servicing income 343,096 209,065 $ 143,579
Servicing advances $ 39,700 $ 31,100