v3.26.3
Allowance for Credit Losses - Aging By Loan Class (Details)
$ in Thousands
Sep. 30, 2026
USD ($)
loan
Dec. 31, 2025
USD ($)
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing $ 16,484 $ 9,826
Loans 9,784,037 9,460,422
Current    
Financing receivable recorded investment    
Loans 9,425,238 9,309,101
Total Past Due    
Financing receivable recorded investment    
Loans 358,799 151,321
30 to 59 Days    
Financing receivable recorded investment    
Loans 27,271 50,285
60 to 89 Days    
Financing receivable recorded investment    
Loans 120,346 31,558
90 Days or Greater    
Financing receivable recorded investment    
Loans $ 211,182 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 $ 5,990,775 5,603,505
Commercial, financial and agricultural | Domestic | Commercial    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 400 515
Loans 1,829,620 1,735,742
Commercial, financial and agricultural | Domestic | Commercial | Current    
Financing receivable recorded investment    
Loans 1,583,345 1,681,450
Commercial, financial and agricultural | Domestic | Commercial | Total Past Due    
Financing receivable recorded investment    
Loans 246,275 54,292
Commercial, financial and agricultural | Domestic | Commercial | 30 to 59 Days    
Financing receivable recorded investment    
Loans 4,828 5,988
Commercial, financial and agricultural | Domestic | Commercial | 60 to 89 Days    
Financing receivable recorded investment    
Loans 96,185 795
Commercial, financial and agricultural | Domestic | Commercial | 90 Days or Greater    
Financing receivable recorded investment    
Loans 145,262 47,509
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 779  
Loans 3,084,478 3,182,970
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Current    
Financing receivable recorded investment    
Loans 3,055,724 3,158,480
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Total Past Due    
Financing receivable recorded investment    
Loans 28,754 24,490
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | 30 to 59 Days    
Financing receivable recorded investment    
Loans 9,426 567
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | 60 to 89 Days    
Financing receivable recorded investment    
Loans 15,658 23,923
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | 90 Days or Greater    
Financing receivable recorded investment    
Loans 3,670  
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily    
Financing receivable recorded investment    
Loans 1,076,677 684,793
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | Current    
Financing receivable recorded investment    
Loans 1,026,381 638,472
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | Total Past Due    
Financing receivable recorded investment    
Loans 50,296 46,321
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | 30 to 59 Days    
Financing receivable recorded investment    
Loans 325 33,684
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | 60 to 89 Days    
Financing receivable recorded investment    
Loans 3,033  
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | 90 Days or Greater    
Financing receivable recorded investment    
Loans 46,938 12,637
Commercial real estate    
Financing receivable recorded investment    
Loans 2,279,623 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 195 721
Loans 2,279,623 2,338,593
Commercial real estate | Domestic | Commercial real estate construction development | Current    
Financing receivable recorded investment    
Loans 2,276,784 2,337,036
Commercial real estate | Domestic | Commercial real estate construction development | Total Past Due    
Financing receivable recorded investment    
Loans 2,839 1,557
Commercial real estate | Domestic | Commercial real estate construction development | 30 to 59 Days    
Financing receivable recorded investment    
Loans 2,644 836
Commercial real estate | Domestic | Commercial real estate construction development | 90 Days or Greater    
Financing receivable recorded investment    
Loans 195 721
Real estate - mortgage    
Financing receivable recorded investment    
Loans 1,091,215 1,074,510
Real estate - mortgage | Domestic | Residential First Lien    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 10,089 5,766
Loans 670,458 629,434
Real estate - mortgage | Domestic | Residential First Lien | Current    
Financing receivable recorded investment    
Loans 650,799 614,656
Real estate - mortgage | Domestic | Residential First Lien | Total Past Due    
Financing receivable recorded investment    
Loans 19,659 14,778
Real estate - mortgage | Domestic | Residential First Lien | 30 to 59 Days    
Financing receivable recorded investment    
Loans 6,460 5,898
Real estate - mortgage | Domestic | Residential First Lien | 60 to 89 Days    
Financing receivable recorded investment    
Loans 3,103 3,093
Real estate - mortgage | Domestic | Residential First Lien | 90 Days or Greater    
Financing receivable recorded investment    
Loans 10,096 5,787
Real estate - mortgage | Domestic | Residential Junior Lien    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 3,722 2,190
Loans 420,757 445,076
Real estate - mortgage | Domestic | Residential Junior Lien | Current    
Financing receivable recorded investment    
Loans 412,665 440,175
Real estate - mortgage | Domestic | Residential Junior Lien | Total Past Due    
Financing receivable recorded investment    
Loans 8,092 4,901
Real estate - mortgage | Domestic | Residential Junior Lien | 30 to 59 Days    
Financing receivable recorded investment    
Loans 2,362 1,766
Real estate - mortgage | Domestic | Residential Junior Lien | 60 to 89 Days    
Financing receivable recorded investment    
Loans 2,008 945
Real estate - mortgage | Domestic | Residential Junior Lien | 90 Days or Greater    
Financing receivable recorded investment    
Loans 3,722 2,190
Consumer    
Financing receivable recorded investment    
Loans 50,686 51,003
Consumer | Domestic    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing   8
Loans 50,686 51,003
Consumer | Domestic | Current    
Financing receivable recorded investment    
Loans 50,514 50,714
Consumer | Domestic | Total Past Due    
Financing receivable recorded investment    
Loans 172 289
Consumer | Domestic | 30 to 59 Days    
Financing receivable recorded investment    
Loans 167 250
Consumer | Domestic | 60 to 89 Days    
Financing receivable recorded investment    
Loans 5 31
Consumer | Domestic | 90 Days or Greater    
Financing receivable recorded investment    
Loans   8
Foreign    
Financing receivable recorded investment    
Loans 371,738 392,811
Foreign | Foreign    
Financing receivable recorded investment    
Past due 90 days or Greater and Still Accruing 1,299 626
Loans 371,738 392,811
Foreign | Foreign | Current    
Financing receivable recorded investment    
Loans 369,026 388,118
Foreign | Foreign | Total Past Due    
Financing receivable recorded investment    
Loans 2,712 4,693
Foreign | Foreign | 30 to 59 Days    
Financing receivable recorded investment    
Loans 1,059 1,296
Foreign | Foreign | 60 to 89 Days    
Financing receivable recorded investment    
Loans 354 2,771
Foreign | Foreign | 90 Days or Greater    
Financing receivable recorded investment    
Loans $ 1,299 $ 626