Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Rollforward of Mortgage Servicing Rights, at Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Servicing Asset at Fair Value, Amount [Roll Forward]          
Mortgage servicing rights, at fair value, at beginning of period $ 1,800,826 $ 1,450,261 $ 1,993,440 $ 1,086,717  
Purchases of mortgage servicing rights 76,588 201,197 341,110 480,462  
Sales of mortgage servicing rights 905 0 905 0  
Changes in valuation inputs or assumptions used in the valuation model (144,071) 62,680 (477,710) 209,610  
Other changes in fair value (90,529) (42,085) (198,585) (107,754)  
Other changes 7,837 (8,029) (7,604) (5,011)  
Mortgage servicing rights, at fair value, at end of period 1,651,556 $ 1,664,024 1,651,556 $ 1,664,024  
Mortgage servicing rights, at fair value, pledged as collateral for borrowings $ 1,600,000   $ 1,600,000   $ 1,100,000