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Acquisition and Divestiture Activity - Narrative (Details) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Apr. 01, 2024 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2024 USD ($)
Business Acquisition [Line Items] |  |  |
Purchase price of loans at acquisition | $ 613,494 |  |
Par value of acquired loans at acquisition | 679,302 |  |
Allowance for credit losses at acquisition | $ 23,922 |  |
CapStar Financial Holdings, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Shares exchange ratio | 1.155 |  |
Other intangible assets | $ 46,125 |  |
Allowance for credit losses at acquisition | $ 23,900 |  |
Transaction costs, expensed |  | $ 19,400 | $ 22,300
CapStar Financial Holdings, Inc. | Core deposit |  |  |
Business Acquisition [Line Items] |  |  |
Estimated useful lives | 10 years |  |

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