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Securities - Narrative (Details) | Mar. 31, 2024 USD ($) security | Dec. 31, 2023 USD ($) | Mar. 31, 2023 USD ($)
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Schedule of Held-to-maturity Securities [Line Items] |  |  |
Number of securities in an unrealized loss position | security | 595 |  |
Held-to-maturity securities, accrued interest | $ 5,600,000 |  | $ 7,500,000
Held to maturity, amortized cost | 11,675,000 |  |
Held-to-maturity securities, nonaccrual status | 0 | $ 0 |
Available for sale, past due | 1,349,979,000 | 1,407,675,000 |
Available-for-sale, nonaccrual | 0 | 0 |
Total Past Due |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held to maturity, amortized cost | 0 | 0 |
Available for sale, past due | $ 0 | $ 0 |

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