Investment Securities - Summary of Pledged Securities (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
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|---|---|---|---|---|
| Debt Securities, Available-for-sale [Line Items] | ||||
| Held-to-maturity | [1] | $ 900,019 | $ 774,800 | |
| Asset Pledged as Collateral | Securing public and trust department deposits, and repurchase agreements: | ||||
| Debt Securities, Available-for-sale [Line Items] | ||||
| Available-for-sale | 491,562 | 505,963 | ||
| Held-to-maturity | 614,012 | 563,014 | ||
| Asset Pledged as Collateral | Securing additional borrowing capacity at the FHLB and the FRB: | ||||
| Debt Securities, Available-for-sale [Line Items] | ||||
| Available-for-sale | 3,050 | 3,119 | ||
| Held-to-maturity | $ 1,200 | $ 1,215 | ||
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