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Goodwill and Other Intangible Assets - Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Net, Total | $ 128,951 | $ 106,235 |
Core Deposit Premium |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 189,996 | 153,496 |
Accumulated amortization | (73,980) | (59,634) |
Finite-Lived Intangible Assets, Net, Total | 116,016 | 93,862 | $ 97,363
Books of Business Intangible |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 22,068 | 19,937 |
Accumulated amortization | (9,133) | (7,564) |
Finite-Lived Intangible Assets, Net, Total | $ 12,935 | $ 12,373 | $ 13,747

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