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Acquisition and Divestiture Activity - Additional Information (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Apr. 01, 2024 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2024 USD ($)
Business Acquisition [Line Items] |  |  |
Purchase price of loans at acquisition | $ 610,691 |  |
Par value of acquired loans at acquisition | 679,302 |  |
Allowance for credit losses at acquisition | $ 26,725 |  |
CapStar Financial Holdings, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Shares exchange ratio | 1.155 |  |
Other intangible assets | $ 46,125 |  |
Allowance for credit losses at acquisition | $ 26,700 |  |
Transaction costs, expensed |  | $ 6,900 | $ 29,200
CapStar Financial Holdings, Inc. | Core deposit |  |  |
Business Acquisition [Line Items] |  |  |
Estimated useful lives | 10 years |  |

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