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v3.23.2

Mortgage Banking Activities, Mortgage Servicing Rights (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Summary of Mortgage Servicing Rights [Abstract] |  |  |  |  |
Number of residential mortgage loans serviced for others | 116,980 |  | 116,980 |  | 110,541
Outstanding principal balance of residential mortgage loans serviced for others | $ 20,693,294,000 |  | $ 20,693,294,000 |  | $ 18,863,201,000
Weighted average interest rate | 3.58% |  | 3.58% |  | 3.59%
Remaining term (in months) |  |  | 283 months |  | 283 months
Servicing Asset at Fair Value, Amount [Roll Forward] |  |  |  |  |
Beginning balance | $ 299,803,000 | $ 209,563,000 | $ 277,608,000 | $ 163,198,000 | $ 163,198,000
Additions | 4,103,000 | 5,754,000 | 6,603,000 | 10,969,000 |
Acquisitions | 0 | 44,867,000 | 31,138,000 | 44,867,000 |
Changes due to principal payments | (8,445,000) | (7,357,000) | (13,829,000) | (15,317,000) |
Change in fair value due to market assumption changes | 9,261,000 | 17,485,000 | 3,202,000 | 66,595,000 |
Ending balance | $ 304,722,000 | $ 270,312,000 | $ 304,722,000 | $ 270,312,000 | $ 277,608,000
Servicing Assets at Fair Value, Assumptions Used to Estimate Fair Value [Abstract] |  |  |  |  |
Discount rate - risk-free rate plus a market premium (in hundredths) |  |  | 9.44% |  | 9.51%
Prepayment rate - based upon loan interest rate, original term and loan type |  |  | 7.27% |  | 7.54%
Loan servicing costs - annually per loan based upon loan type, performing, minimum (in dollars per loan) |  |  | $ 69 |  | $ 69
Loan servicing costs - annually per loan based upon loan type, performing, maximum (in dollars per loan) |  |  | 94 |  | 94
Loan servicing costs - annually per loan based upon loan type, delinquent, minimum (in dollars per loan) |  |  | 150 |  | 150
Loan servicing costs - annually per loan based upon loan type, delinquent, maximum (in dollars per loan) |  |  | 500 |  | 500
Loan servicing costs - annually per loan based upon loan type, foreclosure, minimum (in dollars per loan) |  |  | 875 |  | 875
Loan servicing costs - annually per loan based upon loan type, foreclosure, maximum (in dollars per loan) |  |  | $ 8,000 |  | $ 8,000
Escrow earnings rate - indexed to rates paid on deposit accounts with comparable average life (in hundredths) |  |  | 4.18% |  | 4.06%
Primary secondary mortgage rate spread | 105 |  | 105 |  | 105
Delinquency rate |  |  | 1.91% |  | 2.33%

X
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- Definition Servicing Assets At Fair Value Assumptions Used to Estimate Fair Value Foreclosure Loan Service Cost Maximum + References No definition available. + Details
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- Definition The maximum cost to service a performing loan for the period used as a variable in estimating fair value. + References No definition available. + Details
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