Quarterly report pursuant to Section 13 or 15(d)

Components of Servicing Revenue (Details)

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Components of Servicing Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Components of Servicing Revenue [Line Items]          
Contractually Specified Servicing Fees, Amount $ 37,226 $ 31,073 $ 104,765 $ 91,896  
Ancillary Fee Income Generated by Servicing Financial Assets, Amount 449 535 1,423 1,650  
Float Income Generated by Servicing Financial Assets, Amount 1,033 402 2,469 1,067  
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets 38,708 $ 32,010 108,657 $ 94,613  
Servicing advances $ 46,464   $ 46,464   $ 37,499