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Regulatory Capital - Adjusted Transition Amounts (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |  |
Retained earnings | $ 4,114,446 | $ 3,624,859 |  |
Allowance for loan losses | 1,435,920 | 1,339,772 | $ 1,357,075 | $ 1,165,335
Liability for unfunded commitments | 84,568 | 112,962 | 124,924 | 72,713
Deferred tax asset | 465,379 | 433,581 |  |
Cumulative Effect, Period Of Adoption, Adjusted Phase-In Amounts Remaining |  |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |  |
Retained earnings | 209,087 |  |  | 836,351
Allowance for loan losses | 259,537 |  |  | 1,038,145
Liability for unfunded commitments | 26,094 |  |  | 104,377
Deferred tax asset | 76,544 |  |  | $ 306,171
Adjustments |  |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |  |
Retained earnings | (209,088) | (209,088) | (209,088) |
Allowance for loan losses | (259,536) | (259,536) | (259,536) |
Liability for unfunded commitments | (26,095) | (26,094) | (26,094) |
Deferred tax asset | $ (76,543) | $ (76,542) | $ (76,542) |

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