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Securities (Details) | 12 Months Ended
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Dec. 31, 2022 USD ($) item security | Dec. 31, 2021 USD ($) security | Dec. 31, 2020 USD ($)
Number of securities in portfolio | security | 4 | 3 |
Accrued interest receivable on held-to-maturity securities | $ 100,000 | $ 100,000 |
Allowance for credit loss | 0 |  |
Accrued interest receivable on available-for-sale debt securities | 3,700,000 | 1,500,000 |
Mortgage Backed Securities Available for Sale Amortized Cost | $ 56,600,000 | 340,800,000 | $ 308,100,000
Number of investment securities | item | 1 |  |
Payment investment amount | $ 21,000,000.0 |  |
Proceeds from Sale of Debt Securities, Available-for-sale | 84,200,000 | 45,000,000.0 | $ 221,000,000.0
Held-to-maturity Securities |  |  |
Specific reserve for outstanding balance of financing receivable in active forbearance | 1,100,000 | 900,000 |
Non-qualified Deferred Compensation Plan [Member] | Other Assets [Member] |  |  |
Deferred Compensation Plan, Amounts Held in Rabbi Trust | 24,300,000 | 26,300,000 |
Collateralized Mortgage Obligations by Commercial Real Estate [Member] |  |  |
Allowance for credit loss | $ 0 | $ 0 |

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