Quarterly report pursuant to Section 13 or 15(d)

Rollforward of Mortgage Servicing Rights, at Fair Value (Details)

v3.7.0.1
Rollforward of Mortgage Servicing Rights, at Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Servicing Assets at Fair Value [Line Items]      
Mortgage servicing rights, at fair value, Beginning Balance $ 693,815 $ 493,688  
Servicing Asset at Fair Value, Additions 76,956 50,273  
Servicing Asset at Fair Value, Additions from Sale of Mortgage Loans 20 204  
Servicing Asset at Fair Value, Disposals 0 0  
Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions 3,182 (84,359)  
Servicing Asset at Fair Value, Other Changes in Fair Value (17,997) (17,081)  
Servicing Asset at Fair Value, Other Changes that Affect Balance (8,396) 3,445  
Mortgage servicing rights, at fair value, Ending Balance 747,580 $ 446,170  
Pledged Assets, Not Separately Reported, Other $ 175,390   $ 180,948