Mortgage Servicing Rights - Schedule of Unpaid Principal Loan Balance of Servicing Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	$ 5,729,853	$ 5,416,459
Federal National Mortgage Association
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	2,540,145	2,478,732
Federal Home Loan Mortgage Corporation
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	1,877,326	1,736,329
Government National Mortgage Association
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	1,212,673	1,094,438
Federal Home Loan Bank
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	98,517	105,702
Other
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items]
Total	$ 1,192	$ 1,258