v3.25.2
Loans and Allowance for Loan Losses - Schedule of Loan Portfolio Class by Risk Grade and Origination Year (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year $ 2,656,651   $ 2,656,651   $ 3,516,478
Term loans amortized cost basis by origination, before current fiscal year 3,617,738   3,617,738   3,605,979
Term loans amortized cost basis by origination, two years before current fiscal year 3,527,872   3,527,872   6,748,428
Term loans amortized cost basis by origination, three years before current fiscal year 6,454,953   6,454,953   6,421,195
Term loans amortized cost basis by origination, four years before current fiscal year 5,743,137   5,743,137   3,779,646
Term loans amortized cost basis by origination, prior 10,173,140   10,173,140   7,400,153
Amortized Cost Basis 10,888,525   10,888,525   10,621,961
Converted to Term Loans 474,700   474,700   515,188
Total loans 43,536,716   43,536,716   42,609,028
Gross charge-offs          
Year One     284   8,272
Year Two     8,315   20,429
Year Three     5,497   9,696
Year Four     2,492   21,447
Year Five     21,651   4,769
Prior     8,675   29,369
Amortized Cost Basis     14,576   66,860
Converted to Term Loans     70   106
Total 34,413 $ 42,291 61,560 $ 92,859 160,948
Total consumer          
Gross charge-offs          
Total 8,784 $ 7,649 16,152 $ 16,563  
Total commercial and industrial          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 1,332,378   1,332,378   1,918,902
Term loans amortized cost basis by origination, before current fiscal year 1,978,424   1,978,424   2,024,538
Term loans amortized cost basis by origination, two years before current fiscal year 1,922,083   1,922,083   2,385,222
Term loans amortized cost basis by origination, three years before current fiscal year 2,308,848   2,308,848   2,480,840
Term loans amortized cost basis by origination, four years before current fiscal year 2,250,524   2,250,524   1,627,809
Term loans amortized cost basis by origination, prior 4,468,088   4,468,088   3,341,160
Amortized Cost Basis 8,780,754   8,780,754   8,470,369
Converted to Term Loans 57,245   57,245   82,289
Total loans 23,098,344   23,098,344   22,331,129
Gross charge-offs          
Year One     0   7,696
Year Two     6,940   16,575
Year Three     3,203   4,329
Year Four     724   9,091
Year Five     660   2,564
Prior     4,817   21,971
Amortized Cost Basis     10,237   57,162
Converted to Term Loans     0   0
Total     26,581   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 857,487   857,487   1,223,336
Term loans amortized cost basis by origination, before current fiscal year 1,241,053   1,241,053   1,034,641
Term loans amortized cost basis by origination, two years before current fiscal year 988,871   988,871   816,396
Term loans amortized cost basis by origination, three years before current fiscal year 755,226   755,226   1,234,324
Term loans amortized cost basis by origination, four years before current fiscal year 1,088,642   1,088,642   671,055
Term loans amortized cost basis by origination, prior 2,226,215   2,226,215   1,642,005
Amortized Cost Basis 8,024,073   8,024,073   7,794,946
Converted to Term Loans 57,245   57,245   82,289
Total loans 15,238,812   15,238,812   14,498,992
Gross charge-offs          
Year One     0   7,696
Year Two     6,940   16,499
Year Three     3,114   3,786
Year Four     712   8,787
Year Five     660   997
Prior     1,395   4,413
Amortized Cost Basis     10,237   53,736
Converted to Term Loans     0   0
Total     23,058   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 474,891   474,891   695,566
Term loans amortized cost basis by origination, before current fiscal year 737,371   737,371   989,897
Term loans amortized cost basis by origination, two years before current fiscal year 933,212   933,212   1,568,826
Term loans amortized cost basis by origination, three years before current fiscal year 1,553,622   1,553,622   1,246,516
Term loans amortized cost basis by origination, four years before current fiscal year 1,161,882   1,161,882   956,754
Term loans amortized cost basis by origination, prior 2,241,873   2,241,873   1,699,155
Amortized Cost Basis 756,681   756,681   675,423
Converted to Term Loans 0   0   0
Total loans 7,859,532   7,859,532   7,832,137
Gross charge-offs          
Year One     0   0
Year Two     0   76
Year Three     89   543
Year Four     12   304
Year Five     0   1,567
Prior     3,422   17,558
Amortized Cost Basis     0   3,426
Converted to Term Loans     0   0
Total     3,523   23,474
Total commercial real estate          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 937,969   937,969   989,849
Term loans amortized cost basis by origination, before current fiscal year 1,082,634   1,082,634   815,592
Term loans amortized cost basis by origination, two years before current fiscal year 895,802   895,802   3,566,392
Term loans amortized cost basis by origination, three years before current fiscal year 3,405,233   3,405,233   2,838,854
Term loans amortized cost basis by origination, four years before current fiscal year 2,461,162   2,461,162   934,216
Term loans amortized cost basis by origination, prior 3,179,292   3,179,292   2,587,280
Amortized Cost Basis 177,598   177,598   282,436
Converted to Term Loans 0   0   0
Total loans 12,139,690   12,139,690   12,014,619
Gross charge-offs          
Year One     0   0
Year Two     0   103
Year Three     109   527
Year Four     168   4,752
Year Five     18,545   35
Prior     5   4,767
Amortized Cost Basis     0   0
Converted to Term Loans     0   0
Total     18,827   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 817,776   817,776   774,358
Term loans amortized cost basis by origination, before current fiscal year 913,205   913,205   646,708
Term loans amortized cost basis by origination, two years before current fiscal year 755,940   755,940   3,414,450
Term loans amortized cost basis by origination, three years before current fiscal year 3,279,514   3,279,514   2,730,301
Term loans amortized cost basis by origination, four years before current fiscal year 2,358,687   2,358,687   899,829
Term loans amortized cost basis by origination, prior 3,047,970   3,047,970   2,488,098
Amortized Cost Basis 136,428   136,428   227,460
Converted to Term Loans 0   0   0
Total loans 11,309,520   11,309,520   11,181,204
Gross charge-offs          
Year One     0   0
Year Two     0   0
Year Three     0   527
Year Four     168   4,752
Year Five     18,545   0
Prior     0   4,602
Amortized Cost Basis     0   0
Converted to Term Loans     0   0
Total     18,713   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 98,086   98,086   159,927
Term loans amortized cost basis by origination, before current fiscal year 118,331   118,331   79,934
Term loans amortized cost basis by origination, two years before current fiscal year 63,361   63,361   97,728
Term loans amortized cost basis by origination, three years before current fiscal year 89,125   89,125   82,526
Term loans amortized cost basis by origination, four years before current fiscal year 77,280   77,280   29,301
Term loans amortized cost basis by origination, prior 69,782   69,782   56,324
Amortized Cost Basis 20,913   20,913   40,178
Converted to Term Loans 0   0   0
Total loans 536,878   536,878   545,918
Gross charge-offs          
Year One     0   0
Year Two     0   103
Year Three     109   0
Year Four     0   0
Year Five     0   0
Prior     5   143
Amortized Cost Basis     0   0
Converted to Term Loans     0   0
Total     114   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 22,107   22,107   55,564
Term loans amortized cost basis by origination, before current fiscal year 51,098   51,098   88,950
Term loans amortized cost basis by origination, two years before current fiscal year 76,501   76,501   54,214
Term loans amortized cost basis by origination, three years before current fiscal year 36,594   36,594   26,027
Term loans amortized cost basis by origination, four years before current fiscal year 25,195   25,195   5,086
Term loans amortized cost basis by origination, prior 61,540   61,540   42,858
Amortized Cost Basis 20,257   20,257   14,798
Converted to Term Loans 0   0   0
Total loans 293,292   293,292   287,497
Gross charge-offs          
Year One     0   0
Year Two     0   0
Year Three     0   0
Year Four     0   0
Year Five     0   35
Prior     0   22
Amortized Cost Basis     0   0
Converted to Term Loans     0   0
Total     0   57
Total consumer          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 386,304   386,304   607,727
Term loans amortized cost basis by origination, before current fiscal year 556,680   556,680   765,849
Term loans amortized cost basis by origination, two years before current fiscal year 709,987   709,987   796,814
Term loans amortized cost basis by origination, three years before current fiscal year 740,872   740,872   1,101,501
Term loans amortized cost basis by origination, four years before current fiscal year 1,031,451   1,031,451   1,217,621
Term loans amortized cost basis by origination, prior 2,525,760   2,525,760   1,471,713
Amortized Cost Basis 1,930,173   1,930,173   1,869,156
Converted to Term Loans 417,455   417,455   432,899
Total loans 8,298,682   8,298,682   8,263,280
Gross charge-offs          
Year One     284   576
Year Two     1,375   3,751
Year Three     2,185   4,840
Year Four     1,600   7,604
Year Five     2,446   2,170
Prior     3,853   2,631
Amortized Cost Basis     4,339   9,698
Converted to Term Loans     70   106
Total     16,152   31,376
Total consumer | Consumer mortgages          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 227,904   227,904   457,366
Term loans amortized cost basis by origination, before current fiscal year 450,056   450,056   683,716
Term loans amortized cost basis by origination, two years before current fiscal year 639,895   639,895   676,242
Term loans amortized cost basis by origination, three years before current fiscal year 640,841   640,841   954,512
Term loans amortized cost basis by origination, four years before current fiscal year 909,930   909,930   1,137,528
Term loans amortized cost basis by origination, prior 2,378,302   2,378,302   1,379,387
Amortized Cost Basis 12   12   25
Converted to Term Loans 0   0   0
Total loans 5,246,940   5,246,940   5,288,776
Gross charge-offs          
Year One     0   0
Year Two     0   11
Year Three     0   0
Year Four     145   3
Year Five     254   30
Prior     1,130   122
Amortized Cost Basis     0   0
Converted to Term Loans     0   0
Total     1,529   166
Total consumer | Home equity          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 1,435,429   1,435,429   1,398,388
Converted to Term Loans 417,455   417,455   432,899
Total loans 1,852,884   1,852,884   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     8   230
Converted to Term Loans     70   106
Total     78   336
Total consumer | Credit cards          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 194,630   194,630   185,871
Converted to Term Loans 0   0   0
Total loans 194,630   194,630   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     3,520   7,153
Converted to Term Loans     0   0
Total     3,520   7,153
Total consumer | Other consumer loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 158,400   158,400   150,361
Term loans amortized cost basis by origination, before current fiscal year 106,624   106,624   82,133
Term loans amortized cost basis by origination, two years before current fiscal year 70,092   70,092   120,572
Term loans amortized cost basis by origination, three years before current fiscal year 100,031   100,031   146,989
Term loans amortized cost basis by origination, four years before current fiscal year 121,521   121,521   80,093
Term loans amortized cost basis by origination, prior 147,458   147,458   92,326
Amortized Cost Basis 300,102   300,102   284,872
Converted to Term Loans 0   0   0
Total loans 1,004,228   1,004,228   957,346
Gross charge-offs          
Year One     284   576
Year Two     1,375   3,740
Year Three     2,185   4,840
Year Four     1,455   7,601
Year Five     2,192   2,140
Prior     2,723   2,509
Amortized Cost Basis     811   2,315
Converted to Term Loans     0   0
Total     11,025   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 834,972   834,972   1,200,861
Term loans amortized cost basis by origination, before current fiscal year 1,227,041   1,227,041   1,001,989
Term loans amortized cost basis by origination, two years before current fiscal year 964,959   964,959   739,134
Term loans amortized cost basis by origination, three years before current fiscal year 681,276   681,276   1,195,316
Term loans amortized cost basis by origination, four years before current fiscal year 1,057,852   1,057,852   629,109
Term loans amortized cost basis by origination, prior 2,165,013   2,165,013   1,586,291
Amortized Cost Basis 7,657,600   7,657,600   7,372,228
Converted to Term Loans 57,245   57,245   81,796
Total loans 14,645,958   14,645,958   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 473,079   473,079   691,899
Term loans amortized cost basis by origination, before current fiscal year 734,624   734,624   981,593
Term loans amortized cost basis by origination, two years before current fiscal year 911,813   911,813   1,468,946
Term loans amortized cost basis by origination, three years before current fiscal year 1,450,992   1,450,992   1,220,421
Term loans amortized cost basis by origination, four years before current fiscal year 1,115,536   1,115,536   872,744
Term loans amortized cost basis by origination, prior 2,127,563   2,127,563   1,621,387
Amortized Cost Basis 713,999   713,999   619,519
Converted to Term Loans 0   0   0
Total loans 7,527,606   7,527,606   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 799,456   799,456   769,775
Term loans amortized cost basis by origination, before current fiscal year 907,013   907,013   642,808
Term loans amortized cost basis by origination, two years before current fiscal year 751,062   751,062   3,306,914
Term loans amortized cost basis by origination, three years before current fiscal year 3,060,601   3,060,601   2,406,325
Term loans amortized cost basis by origination, four years before current fiscal year 2,171,816   2,171,816   898,363
Term loans amortized cost basis by origination, prior 2,947,023   2,947,023   2,405,650
Amortized Cost Basis 134,935   134,935   227,460
Converted to Term Loans 0   0   0
Total loans 10,771,906   10,771,906   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 97,514   97,514   159,008
Term loans amortized cost basis by origination, before current fiscal year 117,365   117,365   79,094
Term loans amortized cost basis by origination, two years before current fiscal year 62,246   62,246   95,050
Term loans amortized cost basis by origination, three years before current fiscal year 85,023   85,023   81,630
Term loans amortized cost basis by origination, four years before current fiscal year 77,029   77,029   28,845
Term loans amortized cost basis by origination, prior 66,492   66,492   53,167
Amortized Cost Basis 20,868   20,868   40,133
Converted to Term Loans 0   0   0
Total loans 526,537   526,537   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 22,107   22,107   55,564
Term loans amortized cost basis by origination, before current fiscal year 51,098   51,098   87,465
Term loans amortized cost basis by origination, two years before current fiscal year 74,852   74,852   54,214
Term loans amortized cost basis by origination, three years before current fiscal year 36,594   36,594   26,002
Term loans amortized cost basis by origination, four years before current fiscal year 25,148   25,148   4,933
Term loans amortized cost basis by origination, prior 60,483   60,483   41,749
Amortized Cost Basis 20,257   20,257   14,798
Converted to Term Loans 0   0   0
Total loans 290,539   290,539   284,725
Pass | Total consumer | Consumer mortgages          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 227,904   227,904   457,176
Term loans amortized cost basis by origination, before current fiscal year 449,791   449,791   681,844
Term loans amortized cost basis by origination, two years before current fiscal year 637,413   637,413   670,652
Term loans amortized cost basis by origination, three years before current fiscal year 634,620   634,620   947,395
Term loans amortized cost basis by origination, four years before current fiscal year 903,501   903,501   1,119,610
Term loans amortized cost basis by origination, prior 2,332,870   2,332,870   1,341,463
Amortized Cost Basis 12   12   25
Converted to Term Loans 0   0   0
Total loans 5,186,111   5,186,111   5,218,165
Pass | Total consumer | Home equity          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 1,422,617   1,422,617   1,386,370
Converted to Term Loans 409,065   409,065   424,891
Total loans 1,831,682   1,831,682   1,811,261
Pass | Total consumer | Credit cards          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 192,877   192,877   184,061
Converted to Term Loans 0   0   0
Total loans 192,877   192,877   184,061
Pass | Total consumer | Other consumer loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 158,173   158,173   150,051
Term loans amortized cost basis by origination, before current fiscal year 106,179   106,179   81,087
Term loans amortized cost basis by origination, two years before current fiscal year 68,968   68,968   119,274
Term loans amortized cost basis by origination, three years before current fiscal year 98,904   98,904   144,297
Term loans amortized cost basis by origination, four years before current fiscal year 119,085   119,085   78,961
Term loans amortized cost basis by origination, prior 146,086   146,086   91,802
Amortized Cost Basis 300,045   300,045   284,801
Converted to Term Loans 0   0   0
Total loans 997,440   997,440   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 2,298   2,298   1,555
Term loans amortized cost basis by origination, before current fiscal year 421   421   20,255
Term loans amortized cost basis by origination, two years before current fiscal year 10,473   10,473   17,775
Term loans amortized cost basis by origination, three years before current fiscal year 17,003   17,003   18,403
Term loans amortized cost basis by origination, four years before current fiscal year 14,044   14,044   2,464
Term loans amortized cost basis by origination, prior 7,138   7,138   36,817
Amortized Cost Basis 116,485   116,485   158,968
Converted to Term Loans 0   0   0
Total loans 167,862   167,862   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 1,535   1,535   1,099
Term loans amortized cost basis by origination, before current fiscal year 0   0   2,466
Term loans amortized cost basis by origination, two years before current fiscal year 11,856   11,856   65,733
Term loans amortized cost basis by origination, three years before current fiscal year 51,752   51,752   5,397
Term loans amortized cost basis by origination, four years before current fiscal year 26,384   26,384   34,244
Term loans amortized cost basis by origination, prior 19,234   19,234   12,621
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 110,761   110,761   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 15,676   15,676   4,583
Term loans amortized cost basis by origination, before current fiscal year 4,858   4,858   2,211
Term loans amortized cost basis by origination, two years before current fiscal year 3,207   3,207   97,443
Term loans amortized cost basis by origination, three years before current fiscal year 211,581   211,581   200,780
Term loans amortized cost basis by origination, four years before current fiscal year 124,149   124,149   0
Term loans amortized cost basis by origination, prior 85,244   85,244   68,559
Amortized Cost Basis 1,493   1,493   0
Converted to Term Loans 0   0   0
Total loans 446,208   446,208   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 572   572   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 750   750   1,060
Term loans amortized cost basis by origination, three years before current fiscal year 796   796   663
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   169
Term loans amortized cost basis by origination, prior 240   240   1,300
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 2,358   2,358   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   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   138
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   25
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 321   321   390
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 321   321   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 20,217   20,217   20,920
Term loans amortized cost basis by origination, before current fiscal year 11,994   11,994   12,397
Term loans amortized cost basis by origination, two years before current fiscal year 13,439   13,439   59,487
Term loans amortized cost basis by origination, three years before current fiscal year 56,947   56,947   14,694
Term loans amortized cost basis by origination, four years before current fiscal year 10,835   10,835   39,482
Term loans amortized cost basis by origination, prior 53,130   53,130   17,028
Amortized Cost Basis 244,769   244,769   258,070
Converted to Term Loans 0   0   493
Total loans 411,331   411,331   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 277   277   2,568
Term loans amortized cost basis by origination, before current fiscal year 2,747   2,747   5,838
Term loans amortized cost basis by origination, two years before current fiscal year 9,543   9,543   34,147
Term loans amortized cost basis by origination, three years before current fiscal year 50,878   50,878   20,698
Term loans amortized cost basis by origination, four years before current fiscal year 19,962   19,962   49,766
Term loans amortized cost basis by origination, prior 95,076   95,076   65,147
Amortized Cost Basis 42,682   42,682   55,904
Converted to Term Loans 0   0   0
Total loans 221,165   221,165   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 2,644   2,644   0
Term loans amortized cost basis by origination, before current fiscal year 1,334   1,334   1,689
Term loans amortized cost basis by origination, two years before current fiscal year 1,671   1,671   10,093
Term loans amortized cost basis by origination, three years before current fiscal year 7,332   7,332   83,795
Term loans amortized cost basis by origination, four years before current fiscal year 41,797   41,797   1,466
Term loans amortized cost basis by origination, prior 15,698   15,698   13,884
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 70,476   70,476   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 0   0   919
Term loans amortized cost basis by origination, before current fiscal year 966   966   840
Term loans amortized cost basis by origination, two years before current fiscal year 365   365   1,618
Term loans amortized cost basis by origination, three years before current fiscal year 3,306   3,306   233
Term loans amortized cost basis by origination, four years before current fiscal year 251   251   287
Term loans amortized cost basis by origination, prior 3,050   3,050   1,857
Amortized Cost Basis 45   45   45
Converted to Term Loans 0   0   0
Total loans 7,983   7,983   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   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   1,347
Term loans amortized cost basis by origination, two years before current fiscal year 1,649   1,649   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 47   47   153
Term loans amortized cost basis by origination, prior 736   736   719
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 2,432   2,432   2,219
Substandard | Total consumer | Consumer mortgages          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   190
Term loans amortized cost basis by origination, before current fiscal year 265   265   1,872
Term loans amortized cost basis by origination, two years before current fiscal year 2,482   2,482   5,590
Term loans amortized cost basis by origination, three years before current fiscal year 6,221   6,221   7,117
Term loans amortized cost basis by origination, four years before current fiscal year 6,429   6,429   17,918
Term loans amortized cost basis by origination, prior 45,393   45,393   37,895
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 60,790   60,790   70,582
Substandard | Total consumer | Home equity          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 12,256   12,256   11,464
Converted to Term Loans 8,242   8,242   7,729
Total loans 20,498   20,498   19,193
Substandard | Total consumer | Credit cards          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 618   618   701
Converted to Term Loans 0   0   0
Total loans 618   618   701
Substandard | Total consumer | Other consumer loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 227   227   310
Term loans amortized cost basis by origination, before current fiscal year 445   445   1,046
Term loans amortized cost basis by origination, two years before current fiscal year 1,124   1,124   1,298
Term loans amortized cost basis by origination, three years before current fiscal year 1,127   1,127   2,692
Term loans amortized cost basis by origination, four years before current fiscal year 2,436   2,436   1,132
Term loans amortized cost basis by origination, prior 1,372   1,372   524
Amortized Cost Basis 57   57   59
Converted to Term Loans 0   0   0
Total loans 6,788   6,788   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   0
Term loans amortized cost basis by origination, before current fiscal year 1,597   1,597   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   5,911
Term loans amortized cost basis by origination, four years before current fiscal year 5,911   5,911   0
Term loans amortized cost basis by origination, prior 934   934   1,869
Amortized Cost Basis 4,697   4,697   5,145
Converted to Term Loans 0   0   0
Total loans 13,139   13,139   12,925
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   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   39,401
Term loans amortized cost basis by origination, four years before current fiscal year 20,925   20,925   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 20,925   20,925   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   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 522   522   535
Converted to Term Loans 0   0   0
Total loans 522   522   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   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 5   5   5
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 5   5   5
Loss | Total consumer | Consumer mortgages          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 39   39   29
Amortized Cost Basis 0   0   0
Converted to Term Loans 0   0   0
Total loans 39   39   29
Loss | Total consumer | Home equity          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 556   556   554
Converted to Term Loans 148   148   279
Total loans 704   704   833
Loss | Total consumer | Credit cards          
Financing Receivable, Credit Quality Indicator [Line Items]          
Term loans amortized cost basis by origination, current fiscal year 0   0   0
Term loans amortized cost basis by origination, before current fiscal year 0   0   0
Term loans amortized cost basis by origination, two years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, three years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, four years before current fiscal year 0   0   0
Term loans amortized cost basis by origination, prior 0   0   0
Amortized Cost Basis 1,135   1,135   1,109
Converted to Term Loans 0   0   0
Total loans $ 1,135   $ 1,135   1,109
Loss | Total 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 loans         $ 12