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Mortgage Servicing Rights - Unpaid Principal Loan Balance of Servicing Portfolio (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items] |  |
Total | $ 5,177,404 | $ 4,761,832
Federal National Mortgage Association |  |
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items] |  |
Total | 2,517,434 | 2,352,981
Federal Home Loan Mortgage Corporation |  |
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items] |  |
Total | 1,630,403 | 1,512,858
Government National Mortgage Association |  |
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items] |  |
Total | 916,455 | 759,524
Federal Home Loan Bank |  |
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items] |  |
Total | 111,699 | 134,616
Other |  |
Financing Receivable, Unpaid Principal Balance Of Servicing Portfolio [Line Items] |  |
Total | $ 1,413 | $ 1,853

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