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Loans and Allowance for Loan Losses - Schedule of Loan Portfolio Class by Regulatory Risk Grade and Origination Year (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year $ 7,150,927 $ 3,516,478  
Term loans amortized cost basis by origination, before current fiscal year 3,722,053 3,605,979  
Term loans amortized cost basis by origination, two years before current fiscal year 3,222,567 6,748,428  
Term loans amortized cost basis by origination, three years before current fiscal year 5,666,458 6,421,195  
Term loans amortized cost basis by origination, four years before current fiscal year 4,898,805 3,779,646  
Term loans amortized cost basis by origination, prior 8,840,560 7,400,153  
Amortized Cost Basis 10,586,647 10,621,961  
Converted to Term Loans 537,610 515,188  
Total 44,625,627 42,609,028  
Gross charge-offs      
Year one 2,585 8,272  
Year two 17,417 20,429  
Year three 9,548 9,696  
Year four 4,608 21,447  
Year five 24,226 4,769  
Prior 19,458 29,369  
Amortized Cost Basis 29,114 66,860  
Converted to Term Loans 2,444 106  
Total 109,400 160,948 $ 183,074
Consumer      
Gross charge-offs      
Total 37,758 31,376 $ 51,304
Total commercial and industrial      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 4,025,267 1,918,902  
Term loans amortized cost basis by origination, before current fiscal year 2,028,042 2,024,538  
Term loans amortized cost basis by origination, two years before current fiscal year 1,769,517 2,385,222  
Term loans amortized cost basis by origination, three years before current fiscal year 2,036,995 2,480,840  
Term loans amortized cost basis by origination, four years before current fiscal year 2,048,182 1,627,809  
Term loans amortized cost basis by origination, prior 3,840,395 3,341,160  
Amortized Cost Basis 8,406,217 8,470,369  
Converted to Term Loans 134,049 82,289  
Total 24,288,664 22,331,129  
Gross charge-offs      
Year one 673 7,696  
Year two 13,370 16,575  
Year three 4,661 4,329  
Year four 1,711 9,091  
Year five 1,846 2,564  
Prior 7,322 21,971  
Amortized Cost Basis 17,420 57,162  
Converted to Term Loans 0 0  
Total 47,003 119,388  
Total commercial and industrial | Commercial, financial, and agricultural      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 2,314,849 1,223,336  
Term loans amortized cost basis by origination, before current fiscal year 1,259,351 1,034,641  
Term loans amortized cost basis by origination, two years before current fiscal year 910,549 816,396  
Term loans amortized cost basis by origination, three years before current fiscal year 726,311 1,234,324  
Term loans amortized cost basis by origination, four years before current fiscal year 1,043,815 671,055  
Term loans amortized cost basis by origination, prior 1,962,606 1,642,005  
Amortized Cost Basis 7,823,215 7,794,946  
Converted to Term Loans 134,049 82,289  
Total 16,174,745 14,498,992  
Gross charge-offs      
Year one 673 7,696  
Year two 13,370 16,499  
Year three 4,497 3,786  
Year four 1,347 8,787  
Year five 1,846 997  
Prior 3,591 4,413  
Amortized Cost Basis 17,420 53,736  
Converted to Term Loans 0 0  
Total 42,744 95,914  
Total commercial and industrial | Owner-occupied      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 1,710,418 695,566  
Term loans amortized cost basis by origination, before current fiscal year 768,691 989,897  
Term loans amortized cost basis by origination, two years before current fiscal year 858,968 1,568,826  
Term loans amortized cost basis by origination, three years before current fiscal year 1,310,684 1,246,516  
Term loans amortized cost basis by origination, four years before current fiscal year 1,004,367 956,754  
Term loans amortized cost basis by origination, prior 1,877,789 1,699,155  
Amortized Cost Basis 583,002 675,423  
Converted to Term Loans 0 0  
Total 8,113,919 7,832,137  
Gross charge-offs      
Year one 0 0  
Year two 0 76  
Year three 164 543  
Year four 364 304  
Year five 0 1,567  
Prior 3,731 17,558  
Amortized Cost Basis 0 3,426  
Converted to Term Loans 0 0  
Total 4,259 23,474  
Total commercial real estate      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 2,396,267 989,849  
Term loans amortized cost basis by origination, before current fiscal year 1,215,160 815,592  
Term loans amortized cost basis by origination, two years before current fiscal year 811,212 3,566,392  
Term loans amortized cost basis by origination, three years before current fiscal year 2,935,466 2,838,854  
Term loans amortized cost basis by origination, four years before current fiscal year 1,888,286 934,216  
Term loans amortized cost basis by origination, prior 2,620,997 2,587,280  
Amortized Cost Basis 230,007 282,436  
Converted to Term Loans 0 0  
Total 12,097,395 12,014,619  
Gross charge-offs      
Year one 0 0  
Year two 0 103  
Year three 327 527  
Year four 335 4,752  
Year five 18,546 35  
Prior 5,431 4,767  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 24,639 10,184  
Total commercial real estate | Investment properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 2,138,004 774,358  
Term loans amortized cost basis by origination, before current fiscal year 1,097,372 646,708  
Term loans amortized cost basis by origination, two years before current fiscal year 729,519 3,414,450  
Term loans amortized cost basis by origination, three years before current fiscal year 2,829,102 2,730,301  
Term loans amortized cost basis by origination, four years before current fiscal year 1,797,299 899,829  
Term loans amortized cost basis by origination, prior 2,509,541 2,488,098  
Amortized Cost Basis 179,085 227,460  
Converted to Term Loans 0 0  
Total 11,279,922 11,181,204  
Gross charge-offs      
Year one 0 0  
Year two 0 0  
Year three 0 527  
Year four 206 4,752  
Year five 18,545 0  
Prior 4,725 4,602  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 23,476 9,881  
Total commercial real estate | 1-4 family properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 184,495 159,927  
Term loans amortized cost basis by origination, before current fiscal year 70,888 79,934  
Term loans amortized cost basis by origination, two years before current fiscal year 55,430 97,728  
Term loans amortized cost basis by origination, three years before current fiscal year 77,083 82,526  
Term loans amortized cost basis by origination, four years before current fiscal year 68,161 29,301  
Term loans amortized cost basis by origination, prior 59,025 56,324  
Amortized Cost Basis 27,096 40,178  
Converted to Term Loans 0 0  
Total 542,178 545,918  
Gross charge-offs      
Year one 0 0  
Year two 0 103  
Year three 110 0  
Year four 129 0  
Year five 1 0  
Prior 177 143  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 417 246  
Total commercial real estate | Land and development      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 73,768 55,564  
Term loans amortized cost basis by origination, before current fiscal year 46,900 88,950  
Term loans amortized cost basis by origination, two years before current fiscal year 26,263 54,214  
Term loans amortized cost basis by origination, three years before current fiscal year 29,281 26,027  
Term loans amortized cost basis by origination, four years before current fiscal year 22,826 5,086  
Term loans amortized cost basis by origination, prior 52,431 42,858  
Amortized Cost Basis 23,826 14,798  
Converted to Term Loans 0 0  
Total 275,295 287,497  
Gross charge-offs      
Year one 0 0  
Year two 0 0  
Year three 217 0  
Year four 0 0  
Year five 0 35  
Prior 529 22  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 746 57  
Consumer      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 729,393 607,727  
Term loans amortized cost basis by origination, before current fiscal year 478,851 765,849  
Term loans amortized cost basis by origination, two years before current fiscal year 641,838 796,814  
Term loans amortized cost basis by origination, three years before current fiscal year 693,997 1,101,501  
Term loans amortized cost basis by origination, four years before current fiscal year 962,337 1,217,621  
Term loans amortized cost basis by origination, prior 2,379,168 1,471,713  
Amortized Cost Basis 1,950,423 1,869,156  
Converted to Term Loans 403,561 432,899  
Total 8,239,568 8,263,280  
Gross charge-offs      
Year one 1,912 576  
Year two 4,047 3,751  
Year three 4,560 4,840  
Year four 2,562 7,604  
Year five 3,834 2,170  
Prior 6,705 2,631  
Amortized Cost Basis 11,694 9,698  
Converted to Term Loans 2,444 106  
Total 37,758 31,376  
Consumer | Consumer mortgages      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 521,567 457,366  
Term loans amortized cost basis by origination, before current fiscal year 387,720 683,716  
Term loans amortized cost basis by origination, two years before current fiscal year 581,343 676,242  
Term loans amortized cost basis by origination, three years before current fiscal year 610,678 954,512  
Term loans amortized cost basis by origination, four years before current fiscal year 859,786 1,137,528  
Term loans amortized cost basis by origination, prior 2,251,766 1,379,387  
Amortized Cost Basis 0 25  
Converted to Term Loans 0 0  
Total 5,212,860 5,288,776  
Gross charge-offs      
Year one 11 0  
Year two 0 11  
Year three 4 0  
Year four 153 3  
Year five 254 30  
Prior 1,239 122  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 1,661 166  
Consumer | Home equity      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 0 0  
Amortized Cost Basis 1,441,430 1,398,388  
Converted to Term Loans 403,561 432,899  
Total 1,844,991 1,831,287  
Gross charge-offs      
Year one 0 0  
Year two 0 0  
Year three 0 0  
Year four 0 0  
Year five 0 0  
Prior 0 0  
Amortized Cost Basis 3,675 230  
Converted to Term Loans 2,444 106  
Total 6,119 336  
Consumer | Credit cards      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 0 0  
Amortized Cost Basis 185,828 185,871  
Converted to Term Loans 0 0  
Total 185,828 185,871  
Gross charge-offs      
Year one 0 0  
Year two 0 0  
Year three 0 0  
Year four 0 0  
Year five 0 0  
Prior 0 0  
Amortized Cost Basis 6,678 7,153  
Converted to Term Loans 0 0  
Total 6,678 7,153  
Consumer | Other consumer loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 207,826 150,361  
Term loans amortized cost basis by origination, before current fiscal year 91,131 82,133  
Term loans amortized cost basis by origination, two years before current fiscal year 60,495 120,572  
Term loans amortized cost basis by origination, three years before current fiscal year 83,319 146,989  
Term loans amortized cost basis by origination, four years before current fiscal year 102,551 80,093  
Term loans amortized cost basis by origination, prior 127,402 92,326  
Amortized Cost Basis 323,165 284,872  
Converted to Term Loans 0 0  
Total 995,889 957,346  
Gross charge-offs      
Year one 1,901 576  
Year two 4,047 3,740  
Year three 4,556 4,840  
Year four 2,409 7,601  
Year five 3,580 2,140  
Prior 5,466 2,509  
Amortized Cost Basis 1,341 2,315  
Converted to Term Loans 0 0  
Total 23,300 23,721  
Pass | Total commercial and industrial | Commercial, financial, and agricultural      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 2,292,774 1,200,861  
Term loans amortized cost basis by origination, before current fiscal year 1,182,046 1,001,989  
Term loans amortized cost basis by origination, two years before current fiscal year 845,347 739,134  
Term loans amortized cost basis by origination, three years before current fiscal year 682,444 1,195,316  
Term loans amortized cost basis by origination, four years before current fiscal year 1,019,472 629,109  
Term loans amortized cost basis by origination, prior 1,910,543 1,586,291  
Amortized Cost Basis 7,575,472 7,372,228  
Converted to Term Loans 132,487 81,796  
Total 15,640,585 13,806,724  
Pass | Total commercial and industrial | Owner-occupied      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 1,706,208 691,899  
Term loans amortized cost basis by origination, before current fiscal year 765,943 981,593  
Term loans amortized cost basis by origination, two years before current fiscal year 820,099 1,468,946  
Term loans amortized cost basis by origination, three years before current fiscal year 1,262,658 1,220,421  
Term loans amortized cost basis by origination, four years before current fiscal year 976,305 872,744  
Term loans amortized cost basis by origination, prior 1,781,091 1,621,387  
Amortized Cost Basis 576,005 619,519  
Converted to Term Loans 0 0  
Total 7,888,309 7,476,509  
Pass | Total commercial real estate | Investment properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 2,119,190 769,775  
Term loans amortized cost basis by origination, before current fiscal year 1,092,620 642,808  
Term loans amortized cost basis by origination, two years before current fiscal year 707,016 3,306,914  
Term loans amortized cost basis by origination, three years before current fiscal year 2,605,609 2,406,325  
Term loans amortized cost basis by origination, four years before current fiscal year 1,649,021 898,363  
Term loans amortized cost basis by origination, prior 2,450,234 2,405,650  
Amortized Cost Basis 179,085 227,460  
Converted to Term Loans 0 0  
Total 10,802,775 10,657,295  
Pass | Total commercial real estate | 1-4 family properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 183,932 159,008  
Term loans amortized cost basis by origination, before current fiscal year 69,822 79,094  
Term loans amortized cost basis by origination, two years before current fiscal year 54,365 95,050  
Term loans amortized cost basis by origination, three years before current fiscal year 74,283 81,630  
Term loans amortized cost basis by origination, four years before current fiscal year 67,928 28,845  
Term loans amortized cost basis by origination, prior 56,113 53,167  
Amortized Cost Basis 27,096 40,133  
Converted to Term Loans 0 0  
Total 533,539 536,927  
Pass | Total commercial real estate | Land and development      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 73,768 55,564  
Term loans amortized cost basis by origination, before current fiscal year 46,900 87,465  
Term loans amortized cost basis by origination, two years before current fiscal year 24,827 54,214  
Term loans amortized cost basis by origination, three years before current fiscal year 29,281 26,002  
Term loans amortized cost basis by origination, four years before current fiscal year 22,780 4,933  
Term loans amortized cost basis by origination, prior 52,019 41,749  
Amortized Cost Basis 23,826 14,798  
Converted to Term Loans 0 0  
Total 273,401 284,725  
Pass | Consumer | Consumer mortgages      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 520,450 457,176  
Term loans amortized cost basis by origination, before current fiscal year 387,173 681,844  
Term loans amortized cost basis by origination, two years before current fiscal year 578,158 670,652  
Term loans amortized cost basis by origination, three years before current fiscal year 603,650 947,395  
Term loans amortized cost basis by origination, four years before current fiscal year 851,341 1,119,610  
Term loans amortized cost basis by origination, prior 2,205,263 1,341,463  
Amortized Cost Basis 0 25  
Converted to Term Loans 0 0  
Total 5,146,035 5,218,165  
Pass | Consumer | Home equity      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 0 0  
Amortized Cost Basis 1,433,248 1,386,370  
Converted to Term Loans 394,150 424,891  
Total 1,827,398 1,811,261  
Pass | Consumer | Credit cards      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 0 0  
Amortized Cost Basis 184,058 184,061  
Converted to Term Loans 0 0  
Total 184,058 184,061  
Pass | Consumer | Other consumer loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 207,298 150,051  
Term loans amortized cost basis by origination, before current fiscal year 90,472 81,087  
Term loans amortized cost basis by origination, two years before current fiscal year 59,181 119,274  
Term loans amortized cost basis by origination, three years before current fiscal year 81,824 144,297  
Term loans amortized cost basis by origination, four years before current fiscal year 100,325 78,961  
Term loans amortized cost basis by origination, prior 126,130 91,802  
Amortized Cost Basis 323,134 284,801  
Converted to Term Loans 0 0  
Total 988,364 950,273  
Special Mention | Total commercial and industrial | Commercial, financial, and agricultural      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 1,817 1,555  
Term loans amortized cost basis by origination, before current fiscal year 36,455 20,255  
Term loans amortized cost basis by origination, two years before current fiscal year 30,609 17,775  
Term loans amortized cost basis by origination, three years before current fiscal year 3,329 18,403  
Term loans amortized cost basis by origination, four years before current fiscal year 10,213 2,464  
Term loans amortized cost basis by origination, prior 5,342 36,817  
Amortized Cost Basis 36,660 158,968  
Converted to Term Loans 1,484 0  
Total 125,909 256,237  
Special Mention | Total commercial and industrial | Owner-occupied      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 402 1,099  
Term loans amortized cost basis by origination, before current fiscal year 0 2,466  
Term loans amortized cost basis by origination, two years before current fiscal year 19,338 65,733  
Term loans amortized cost basis by origination, three years before current fiscal year 2,721 5,397  
Term loans amortized cost basis by origination, four years before current fiscal year 5,711 34,244  
Term loans amortized cost basis by origination, prior 16,501 12,621  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 44,673 121,560  
Special Mention | Total commercial real estate | Investment properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 15,741 4,583  
Term loans amortized cost basis by origination, before current fiscal year 4,483 2,211  
Term loans amortized cost basis by origination, two years before current fiscal year 16,744 97,443  
Term loans amortized cost basis by origination, three years before current fiscal year 192,500 200,780  
Term loans amortized cost basis by origination, four years before current fiscal year 87,170 0  
Term loans amortized cost basis by origination, prior 32,540 68,559  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 349,178 373,576  
Special Mention | Total commercial real estate | 1-4 family properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 188 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 1,060  
Term loans amortized cost basis by origination, three years before current fiscal year 766 663  
Term loans amortized cost basis by origination, four years before current fiscal year 0 169  
Term loans amortized cost basis by origination, prior 116 1,300  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 1,070 3,192  
Special Mention | Total commercial real estate | Land and development      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 138  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 25  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 212 390  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 212 553  
Substandard | Total commercial and industrial | Commercial, financial, and agricultural      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 20,258 20,920  
Term loans amortized cost basis by origination, before current fiscal year 3,864 12,397  
Term loans amortized cost basis by origination, two years before current fiscal year 34,593 59,487  
Term loans amortized cost basis by origination, three years before current fiscal year 40,538 14,694  
Term loans amortized cost basis by origination, four years before current fiscal year 9,219 39,482  
Term loans amortized cost basis by origination, prior 46,685 17,028  
Amortized Cost Basis 208,577 258,070  
Converted to Term Loans 78 493  
Total 363,812 422,571  
Substandard | Total commercial and industrial | Owner-occupied      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 3,808 2,568  
Term loans amortized cost basis by origination, before current fiscal year 2,748 5,838  
Term loans amortized cost basis by origination, two years before current fiscal year 19,531 34,147  
Term loans amortized cost basis by origination, three years before current fiscal year 45,305 20,698  
Term loans amortized cost basis by origination, four years before current fiscal year 22,351 49,766  
Term loans amortized cost basis by origination, prior 80,197 65,147  
Amortized Cost Basis 6,997 55,904  
Converted to Term Loans 0 0  
Total 180,937 234,068  
Substandard | Total commercial real estate | Investment properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 3,073 0  
Term loans amortized cost basis by origination, before current fiscal year 269 1,689  
Term loans amortized cost basis by origination, two years before current fiscal year 5,759 10,093  
Term loans amortized cost basis by origination, three years before current fiscal year 30,993 83,795  
Term loans amortized cost basis by origination, four years before current fiscal year 61,108 1,466  
Term loans amortized cost basis by origination, prior 26,762 13,884  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 127,964 110,927  
Substandard | Total commercial real estate | 1-4 family properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 375 919  
Term loans amortized cost basis by origination, before current fiscal year 1,066 840  
Term loans amortized cost basis by origination, two years before current fiscal year 1,065 1,618  
Term loans amortized cost basis by origination, three years before current fiscal year 2,034 233  
Term loans amortized cost basis by origination, four years before current fiscal year 233 287  
Term loans amortized cost basis by origination, prior 2,796 1,857  
Amortized Cost Basis 0 45  
Converted to Term Loans 0 0  
Total 7,569 5,799  
Substandard | Total commercial real estate | Land and development      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 1,347  
Term loans amortized cost basis by origination, two years before current fiscal year 1,436 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 46 153  
Term loans amortized cost basis by origination, prior 200 719  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 1,682 2,219  
Substandard | Consumer | Consumer mortgages      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 1,117 190  
Term loans amortized cost basis by origination, before current fiscal year 547 1,872  
Term loans amortized cost basis by origination, two years before current fiscal year 3,185 5,590  
Term loans amortized cost basis by origination, three years before current fiscal year 7,028 7,117  
Term loans amortized cost basis by origination, four years before current fiscal year 8,445 17,918  
Term loans amortized cost basis by origination, prior 46,467 37,895  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 66,789 70,582  
Substandard | Consumer | Home equity      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 0 0  
Amortized Cost Basis 7,723 11,464  
Converted to Term Loans 8,933 7,729  
Total 16,656 19,193  
Substandard | Consumer | Credit cards      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 0 0  
Amortized Cost Basis 650 701  
Converted to Term Loans 0 0  
Total 650 701  
Substandard | Consumer | Other consumer loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 528 310  
Term loans amortized cost basis by origination, before current fiscal year 659 1,046  
Term loans amortized cost basis by origination, two years before current fiscal year 1,314 1,298  
Term loans amortized cost basis by origination, three years before current fiscal year 1,495 2,692  
Term loans amortized cost basis by origination, four years before current fiscal year 2,226 1,132  
Term loans amortized cost basis by origination, prior 1,272 524  
Amortized Cost Basis 31 59  
Converted to Term Loans 0 0  
Total 7,525 7,061  
Doubtful | Total commercial and industrial | Commercial, financial, and agricultural      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 36,986 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 5,911  
Term loans amortized cost basis by origination, four years before current fiscal year 4,911 0  
Term loans amortized cost basis by origination, prior 0 1,869  
Amortized Cost Basis 1,703    
Converted to Term Loans 0    
Total 43,600 12,925  
Doubtful | Total commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total   5,145  
Doubtful | Total commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total   0  
Doubtful | Total commercial real estate | Investment properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year   0  
Term loans amortized cost basis by origination, before current fiscal year   0  
Term loans amortized cost basis by origination, two years before current fiscal year   0  
Term loans amortized cost basis by origination, three years before current fiscal year   39,401  
Term loans amortized cost basis by origination, four years before current fiscal year   0  
Term loans amortized cost basis by origination, prior   0  
Amortized Cost Basis   0  
Converted to Term Loans   0  
Total   39,401  
Loss | Total commercial and industrial | Commercial, financial, and agricultural      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 36 0  
Amortized Cost Basis 803 535  
Converted to Term Loans 0 0  
Total 839 535  
Loss | Total commercial real estate | Investment properties      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 5 5  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 5 5  
Loss | Consumer | Consumer mortgages      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 36 29  
Amortized Cost Basis 0 0  
Converted to Term Loans 0 0  
Total 36 29  
Loss | Consumer | Home equity      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 0 0  
Amortized Cost Basis 459 554  
Converted to Term Loans 478 279  
Total 937 833  
Loss | Consumer | Credit cards      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year 0 0  
Term loans amortized cost basis by origination, before current fiscal year 0 0  
Term loans amortized cost basis by origination, two years before current fiscal year 0 0  
Term loans amortized cost basis by origination, three years before current fiscal year 0 0  
Term loans amortized cost basis by origination, four years before current fiscal year 0 0  
Term loans amortized cost basis by origination, prior 0 0  
Amortized Cost Basis 1,120 1,109  
Converted to Term Loans 0 0  
Total $ 1,120 1,109  
Loss | Consumer | Other consumer loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Term loans amortized cost basis by origination, current fiscal year   0  
Term loans amortized cost basis by origination, before current fiscal year   0  
Term loans amortized cost basis by origination, two years before current fiscal year   0  
Term loans amortized cost basis by origination, three years before current fiscal year   0  
Term loans amortized cost basis by origination, four years before current fiscal year   0  
Term loans amortized cost basis by origination, prior   0  
Amortized Cost Basis   12  
Converted to Term Loans   0  
Total   $ 12