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Goodwill and Other Intangible Assets - Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Net, Total | $ 112,645 | $ 128,951 |
Core Deposit Premium |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 187,467 | 189,996 |
Accumulated amortization | (86,123) | (73,980) |
Finite-Lived Intangible Assets, Net, Total | 101,344 | 116,016 | $ 93,862
Books of Business Intangible |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 22,068 | 22,068 |
Accumulated amortization | (10,767) | (9,133) |
Finite-Lived Intangible Assets, Net, Total | $ 11,301 | $ 12,935 | $ 12,373

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