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Commitments and Contingencies - Schedule of Loan Commitments and Letters of Credit (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Loss Contingencies [Line Items] |  |
Carrying amount included in other assets | $ 835,089 | $ 672,803
Permanent and short-term construction loans and letter of credit commitments | 345,472 | 205,855
Funded portion of permanent and short-term loans and letters of credit | 235,095 | 229,668
Future funding commitment amounts | 448,800 | 358,500
Letters of credit |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 430,116 | 340,385
Contractual amount net of risk participations | 15,300 | 16,800
Commitments to fund commercial and industrial loans |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 10,948,184 | 9,956,797
Commitments to fund commercial real estate, construction, and land development loans |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 2,253,164 | 2,135,638
Commitments under home equity lines of credit |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 2,106,257 | 2,119,616
Unused credit card lines |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 451,215 | 446,800
Other loan commitments |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 586,853 | 621,659
Total letters of credit and unfunded lending commitments |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 16,775,789 | 15,620,895
Permanent and Short-Term Construction Loans and Letter of Credit Commitments |  |
Loss Contingencies [Line Items] |  |
Contractual amount net of risk participations | 15,000 | 16,000
Funded Portion of Permanent and Short-Term Loans and Letters of Credit |  |
Loss Contingencies [Line Items] |  |
Contractual amount net of risk participations | $ 20,100 | $ 16,200

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