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v3.25.3

Mergers and Acquisitions - Narrative (Details) $ in Thousands |  |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) | Apr. 01, 2025 USD ($) bankingLocation shares | Sep. 30, 2025 USD ($) | Jun. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |
Merger and conversion related expenses |  |  | $ 17,494 | $ 20,479 | $ 11,273 | $ 20,479 | $ 38,764 | $ 11,273 |  |
Goodwill resulting from merger | $ 1,411,711 |  | 1,411,711 |  | 988,898 |  | 1,411,711 | 988,898 | $ 988,898 | $ 991,665
Goodwill, measurement period adjustment |  |  |  |  |  |  | 422,813 | 0 |  |
Weighted average useful life (in years) | 9 years |  |  |  |  |  |  |  |  |
Credit provision expense |  |  |  | $ 66,612 |  |  |  |  |  |
The First |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |
Transaction value |  | $ 1,052,690 |  |  |  |  |  |  |  |
Shares issued to common shareholders (in shares) | shares |  | 30,811,851 |  |  |  |  |  |  |  |
Cash settlement for stock options |  | $ 1,869 |  |  |  |  |  |  |  |
Voting interest acquired (percent) |  | 100.00% |  |  |  |  |  |  |  |
Number of locations acquired | bankingLocation |  | 116 |  |  |  |  |  |  |  |
Merger and conversion related expenses |  |  | 17,494 |  | $ 4,746 |  | $ 38,764 | $ 4,746 |  |
Intangible assets, including goodwill |  | $ 582,423 |  |  |  |  |  |  |  |
Goodwill resulting from merger |  | 272,520 |  |  |  |  |  |  |  |
Core deposit intangible |  | 159,610 |  |  |  |  |  |  |  |
Goodwill, measurement period adjustment |  |  | $ 8,071 |  |  |  |  |  |  |
Goodwill, Prior to measurement period adjustment |  | $ 430,884 |  |  |  |  |  |  |  |
Weighted average useful life (in years) |  | 10 years |  |  |  |  |  |  |  |
Long-term debt |  | $ 422,067 |  |  |  |  |  |  |  |
The First | Subordinated notes |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 95,262 |  |  |  |  |  |  |  |
The First | Junior subordinated debentures |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 25,653 |  |  |  |  |  |  |  |
The First | Federal Home Loan Bank Advances |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |
Short-term borrowings |  | 298,250 |  |  |  |  |  |  |  |
Fair Value of Net Assets Acquired at Date of Acquisition |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill resulting from merger |  | 422,813 |  |  |  |  |  |  |  |
Long-term debt |  | $ 419,165 |  |  |  |  |  |  |  |

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