Quarterly report pursuant to Section 13 or 15(d)

Mortgage Servicing Rights - Summary of Impact of Adverse Changes on Prepayment Speeds, Discount Rate and Cost to Service at Two Different Data Points (Details)

v3.21.1
Mortgage Servicing Rights - Summary of Impact of Adverse Changes on Prepayment Speeds, Discount Rate and Cost to Service at Two Different Data Points (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Transfers and Servicing [Abstract]    
Mortgage servicing rights, Prepayment Speeds, 10% Adverse Change $ (38,692) $ (36,117)
Mortgage servicing rights, Prepayment Speeds, 20% Adverse Change (71,688) (66,419)
Mortgage servicing rights, Discount Rates 10%, Adverse Change (25,906) (18,638)
Mortgage servicing rights, Discount Rates 20%, Adverse Change (45,594) (32,312)
Mortgage servicing rights, Cost to Service (per loan) 10%, Adverse Change (12,565) (10,334)
Mortgage servicing rights, Cost to Service (per loan) 20%, Adverse Change $ (20,447) $ (16,700)