Annual report pursuant to Section 13 and 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
Dec. 31, 2020
Dec. 31, 2019
Transfers And Servicing Of Financial Assets [Abstract]    
Mortgage servicing rights, Prepayment Speeds 10% Adverse Change $ (36,117) $ (31,329)
Mortgage servicing rights, Prepayment Speeds 20% Adverse Change (66,419) (49,031)
Mortgage servicing rights, Discount Rates 10% Adverse Change (18,638) (23,682)
Mortgage servicing rights, Discount Rates 20% Adverse Change (32,312) (35,701)
Mortgage servicing rights, Cost to Service (per loan) 10% Adverse Change (10,334) (16,679)
Mortgage servicing rights, Cost to Service (per loan) 20% Adverse Change $ (16,700) $ (22,543)