Mortgage Servicing Rights - Unpaid Principal Loan Balance of Servicing Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	$ 5,416,459	$ 5,177,404
Federal National Mortgage Association
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	2,478,732	2,517,434
Federal Home Loan Mortgage Corporation
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	1,736,329	1,630,403
Government National Mortgage Association
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	1,094,438	916,455
Federal Home Loan Bank
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	105,702	111,699
Other
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	$ 1,258	$ 1,413