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v3.22.4

Investments - Narrative (Details) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) number_of_securities | Dec. 31, 2021 USD ($) number_of_securities | Dec. 31, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Debt Securities, Available-for-sale, Amortized Cost |  | $ 1,729,054 | $ 1,358,960 |
Other investments |  | $ 63,790 | $ 59,896 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | number_of_securities |  | 740 | 290 |
Gross Unrealized Gains |  | $ 481 | $ 15,247 |
Maximum percentage of shareholders' equity security holdings held of one issuer |  | 10.00% |  |
Available-for-sale securities pledged as collateral, fair value |  | $ 734,500 | 752,700 |
Weighted average life (in years) |  | 5 years |  |
accrued interest receivable, held to maturity securities |  | $ 5,800 | 3,400 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss |  | 735 | 614 |
Sale of debt securities, available-for-sale |  | 0 | 27,135 | $ 20,221
Gross gains realized |  | 0 | 0 | $ 421
Securities available-for-sale |  | 1,535,807 | 1,366,006 |
Subsequent Event |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Sale of debt securities, available-for-sale | $ 28,400 |  |  |
Gross gains realized | $ 400 |  |  |
Des Moines |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Other investments |  | 14,000 | 12,100 |
Reclassified to Held to Maturity [Member] |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Debt Securities, Available-for-sale, Amortized Cost |  | 116,700 |  |
Gross Unrealized Gains |  | $ 17,600 | $ 21,000 |

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