v3.26.1
Allowance for Credit Losses - Aging By Loan Class (Details)
$ in Thousands
Jun. 30, 2026
USD ($)
loan
Dec. 31, 2025
USD ($)
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing $ 11,164 $ 9,826
Loans 9,863,199 9,460,422
Current    
Financing receivable recorded investment    
Loans 9,662,725 9,309,101
Total Past Due    
Financing receivable recorded investment    
Loans 200,474 151,321
30 to 59 Days    
Financing receivable recorded investment    
Loans 49,157 50,285
60 to 89 Days    
Financing receivable recorded investment    
Loans 45,869 31,558
90 Days or Greater    
Financing receivable recorded investment    
Loans $ 105,448 69,478
Commercial real estate: multifamily    
Financing receivable recorded investment    
Number of loans placed on non-accrual | loan 2  
Commercial, financial and agricultural    
Financing receivable recorded investment    
Loans $ 6,036,796 5,603,505
Commercial, financial and agricultural | Domestic | Commercial    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 289 515
Loans 1,743,353 1,735,742
Commercial, financial and agricultural | Domestic | Commercial | Current    
Financing receivable recorded investment    
Loans 1,638,225 1,681,450
Commercial, financial and agricultural | Domestic | Commercial | Total Past Due    
Financing receivable recorded investment    
Loans 105,128 54,292
Commercial, financial and agricultural | Domestic | Commercial | 30 to 59 Days    
Financing receivable recorded investment    
Loans 23,958 5,988
Commercial, financial and agricultural | Domestic | Commercial | 60 to 89 Days    
Financing receivable recorded investment    
Loans 29,334 795
Commercial, financial and agricultural | Domestic | Commercial | 90 Days or Greater    
Financing receivable recorded investment    
Loans 51,836 47,509
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial    
Financing receivable recorded investment    
Loans 3,300,148 3,182,970
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Current    
Financing receivable recorded investment    
Loans 3,280,784 3,158,480
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Total Past Due    
Financing receivable recorded investment    
Loans 19,364 24,490
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | 30 to 59 Days    
Financing receivable recorded investment    
Loans 11,804 567
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | 60 to 89 Days    
Financing receivable recorded investment    
Loans 7,560 23,923
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily    
Financing receivable recorded investment    
Loans 993,295 684,793
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | Current    
Financing receivable recorded investment    
Loans 950,381 638,472
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | Total Past Due    
Financing receivable recorded investment    
Loans 42,914 46,321
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | 30 to 59 Days    
Financing receivable recorded investment    
Loans 183 33,684
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | 90 Days or Greater    
Financing receivable recorded investment    
Loans 42,731 12,637
Commercial real estate    
Financing receivable recorded investment    
Loans 2,279,481 2,338,593
Commercial real estate | Domestic | Commercial real estate construction development    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing   721
Loans 2,279,481 2,338,593
Commercial real estate | Domestic | Commercial real estate construction development | Current    
Financing receivable recorded investment    
Loans 2,277,835 2,337,036
Commercial real estate | Domestic | Commercial real estate construction development | Total Past Due    
Financing receivable recorded investment    
Loans 1,646 1,557
Commercial real estate | Domestic | Commercial real estate construction development | 30 to 59 Days    
Financing receivable recorded investment    
Loans 934 836
Commercial real estate | Domestic | Commercial real estate construction development | 60 to 89 Days    
Financing receivable recorded investment    
Loans 712  
Commercial real estate | Domestic | Commercial real estate construction development | 90 Days or Greater    
Financing receivable recorded investment    
Loans   721
Real estate - mortgage    
Financing receivable recorded investment    
Loans 1,095,001 1,074,510
Real estate - mortgage | Domestic | Residential First Lien    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 7,050 5,766
Loans 662,786 629,434
Real estate - mortgage | Domestic | Residential First Lien | Current    
Financing receivable recorded investment    
Loans 644,732 614,656
Real estate - mortgage | Domestic | Residential First Lien | Total Past Due    
Financing receivable recorded investment    
Loans 18,054 14,778
Real estate - mortgage | Domestic | Residential First Lien | 30 to 59 Days    
Financing receivable recorded investment    
Loans 6,262 5,898
Real estate - mortgage | Domestic | Residential First Lien | 60 to 89 Days    
Financing receivable recorded investment    
Loans 4,736 3,093
Real estate - mortgage | Domestic | Residential First Lien | 90 Days or Greater    
Financing receivable recorded investment    
Loans 7,056 5,787
Real estate - mortgage | Domestic | Residential Junior Lien    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 2,536 2,190
Loans 432,215 445,076
Real estate - mortgage | Domestic | Residential Junior Lien | Current    
Financing receivable recorded investment    
Loans 424,446 440,175
Real estate - mortgage | Domestic | Residential Junior Lien | Total Past Due    
Financing receivable recorded investment    
Loans 7,769 4,901
Real estate - mortgage | Domestic | Residential Junior Lien | 30 to 59 Days    
Financing receivable recorded investment    
Loans 4,310 1,766
Real estate - mortgage | Domestic | Residential Junior Lien | 60 to 89 Days    
Financing receivable recorded investment    
Loans 923 945
Real estate - mortgage | Domestic | Residential Junior Lien | 90 Days or Greater    
Financing receivable recorded investment    
Loans 2,536 2,190
Consumer    
Financing receivable recorded investment    
Loans 50,120 51,003
Consumer | Domestic    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 66 8
Loans 50,120 51,003
Consumer | Domestic | Current    
Financing receivable recorded investment    
Loans 49,849 50,714
Consumer | Domestic | Total Past Due    
Financing receivable recorded investment    
Loans 271 289
Consumer | Domestic | 30 to 59 Days    
Financing receivable recorded investment    
Loans 176 250
Consumer | Domestic | 60 to 89 Days    
Financing receivable recorded investment    
Loans 29 31
Consumer | Domestic | 90 Days or Greater    
Financing receivable recorded investment    
Loans 66 8
Foreign    
Financing receivable recorded investment    
Loans 401,801 392,811
Foreign | Foreign    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 1,223 626
Loans 401,801 392,811
Foreign | Foreign | Current    
Financing receivable recorded investment    
Loans 396,473 388,118
Foreign | Foreign | Total Past Due    
Financing receivable recorded investment    
Loans 5,328 4,693
Foreign | Foreign | 30 to 59 Days    
Financing receivable recorded investment    
Loans 1,530 1,296
Foreign | Foreign | 60 to 89 Days    
Financing receivable recorded investment    
Loans 2,575 2,771
Foreign | Foreign | 90 Days or Greater    
Financing receivable recorded investment    
Loans $ 1,223 $ 626