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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