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Loans, Allowance for Credit Losses, and Asset Quality Information - Schedule of Recorded Investment in Loans by Credit Quality Indicators (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | $ 485,995 | $ 2,380,302
Year two | 2,301,564 | 1,329,007
Year three | 1,137,969 | 637,027
Year four | 568,755 | 396,981
Year five | 356,537 | 317,729
Prior | 694,898 | 478,114
Revolving | 519,908 | 544,259
Total | 6,065,626 | 6,083,419
Unamortized net deferred loan fees | (928) | (1,704)
Total loans | 6,064,698 | 6,081,715
Commercial, financial, and agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 603,454 | 648,997
Consumer loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 5,115 | 14,960
Year two | 29,545 | 25,508
Year three | 6,464 | 2,965
Year four | 2,314 | 1,730
Year five | 1,407 | 673
Prior | 940 | 550
Revolving | 11,037 | 10,852
Total | 56,822 | 57,238
Commercial, financial, and agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 36,099 | 206,779
Year two | 179,748 | 140,588
Year three | 106,995 | 74,385
Year four | 69,392 | 76,470
Year five | 72,513 | 16,745
Prior | 30,271 | 17,597
Revolving | 108,436 | 116,433
Total | 603,454 | 648,997
Real estate – construction, land development & other land loans | Real estate, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 114,984 | 575,195
Year two | 488,473 | 134,674
Year three | 95,445 | 74,208
Year four | 64,975 | 12,648
Year five | 9,434 | 9,882
Prior | 12,734 | 8,196
Revolving | 9,841 | 13,746
Total | 795,886 | 828,549
Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 53,416 | 242,926
Year two | 278,294 | 225,388
Year three | 207,002 | 121,148
Year four | 116,193 | 83,945
Year five | 77,422 | 87,050
Prior | 303,418 | 249,433
Revolving | 9,422 | 12,076
Total | 1,045,167 | 1,021,966
Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 372 | 3,380
Year two | 2,608 | 595
Year three | 506 | 525
Year four | 374 | 1,304
Year five | 1,254 | 245
Prior | 2,589 | 2,275
Revolving | 321,645 | 323,608
Total | 329,348 | 331,932
Real estate – mortgage – commercial and other | Real estate, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 276,009 | 1,337,062
Year two | 1,322,896 | 802,254
Year three | 721,557 | 363,796
Year four | 315,507 | 220,884
Year five | 194,507 | 203,134
Prior | 344,946 | 200,063
Revolving | 59,527 | 67,544
Total | 3,234,949 | 3,194,737
Pass [Member] | Consumer loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 5,115 | 14,960
Year two | 29,404 | 25,431
Year three | 6,453 | 2,965
Year four | 2,313 | 1,722
Year five | 1,407 | 673
Prior | 923 | 525
Revolving | 10,998 | 10,810
Total | 56,613 | 57,086
Pass [Member] | Commercial, financial, and agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 35,980 | 204,945
Year two | 177,169 | 138,540
Year three | 105,179 | 71,369
Year four | 66,635 | 66,645
Year five | 62,972 | 16,009
Prior | 29,478 | 17,492
Revolving | 105,225 | 112,933
Total | 582,638 | 627,933
Pass [Member] | Real estate – construction, land development & other land loans | Real estate, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 113,568 | 573,613
Year two | 488,287 | 133,888
Year three | 94,674 | 69,066
Year four | 59,914 | 12,455
Year five | 9,256 | 9,764
Prior | 12,619 | 8,190
Revolving | 9,836 | 13,737
Total | 788,154 | 820,713
Pass [Member] | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 53,280 | 241,619
Year two | 277,391 | 224,617
Year three | 206,074 | 120,097
Year four | 114,970 | 82,531
Year five | 76,281 | 86,074
Prior | 290,677 | 234,950
Revolving | 8,318 | 11,051
Total | 1,026,991 | 1,000,939
Pass [Member] | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 306 | 3,111
Year two | 2,258 | 498
Year three | 410 | 439
Year four | 299 | 1,304
Year five | 1,254 | 245
Prior | 2,244 | 1,649
Revolving | 315,092 | 317,319
Total | 321,863 | 324,565
Pass [Member] | Real estate – mortgage – commercial and other | Real estate, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 275,364 | 1,328,156
Year two | 1,315,875 | 796,992
Year three | 716,571 | 355,885
Year four | 307,705 | 211,118
Year five | 184,889 | 197,165
Prior | 337,011 | 197,659
Revolving | 57,982 | 66,104
Total | 3,195,397 | 3,153,079
Special Mention | Consumer loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 4
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 0 | 0
Revolving | 0 | 0
Total | 0 | 4
Special Mention | Commercial, financial, and agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 0 | 225
Year two | 125 | 1,255
Year three | 399 | 1,313
Year four | 621 | 2,729
Year five | 2,633 | 225
Prior | 216 | 9
Revolving | 2,504 | 2,348
Total | 6,498 | 8,104
Special Mention | Real estate – construction, land development & other land loans | Real estate, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 0 | 41
Year two | 38 | 737
Year three | 726 | 5,095
Year four | 4,117 | 110
Year five | 107 | 104
Prior | 98 | 2
Revolving | 5 | 9
Total | 5,091 | 6,098
Special Mention | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 0 | 888
Year two | 512 | 615
Year three | 448 | 516
Year four | 328 | 229
Year five | 201 | 323
Prior | 3,331 | 3,237
Revolving | 96 | 94
Total | 4,916 | 5,902
Special Mention | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 48 | 194
Year two | 187 | 0
Year three | 0 | 15
Year four | 0 | 0
Year five | 0 | 0
Prior | 18 | 19
Revolving | 1,112 | 1,341
Total | 1,365 | 1,569
Special Mention | Real estate – mortgage – commercial and other | Real estate, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 521 | 1,759
Year two | 2,042 | 4,849
Year three | 4,737 | 5,801
Year four | 4,849 | 3,741
Year five | 3,708 | 2,072
Prior | 3,103 | 1,801
Revolving | 1,340 | 1,440
Total | 20,300 | 21,463
Classified | Consumer loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 0 | 0
Year two | 141 | 73
Year three | 11 | 0
Year four | 1 | 8
Year five | 0 | 0
Prior | 17 | 25
Revolving | 39 | 42
Total | 209 | 148
Classified | Commercial, financial, and agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 119 | 1,609
Year two | 2,454 | 793
Year three | 1,417 | 1,703
Year four | 2,136 | 7,096
Year five | 6,908 | 511
Prior | 577 | 96
Revolving | 707 | 1,152
Total | 14,318 | 12,960
Classified | Real estate – construction, land development & other land loans | Real estate, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 1,416 | 1,541
Year two | 148 | 49
Year three | 45 | 47
Year four | 944 | 83
Year five | 71 | 14
Prior | 17 | 4
Revolving | 0 | 0
Total | 2,641 | 1,738
Classified | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 136 | 419
Year two | 391 | 156
Year three | 480 | 535
Year four | 895 | 1,185
Year five | 940 | 653
Prior | 9,410 | 11,246
Revolving | 1,008 | 931
Total | 13,260 | 15,125
Classified | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 18 | 75
Year two | 163 | 97
Year three | 96 | 71
Year four | 75 | 0
Year five | 0 | 0
Prior | 327 | 607
Revolving | 5,441 | 4,948
Total | 6,120 | 5,798
Classified | Real estate – mortgage – commercial and other | Real estate, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 124 | 7,147
Year two | 4,979 | 413
Year three | 249 | 2,110
Year four | 2,953 | 6,025
Year five | 5,910 | 3,897
Prior | 4,832 | 603
Revolving | 205 | 0
Total | $ 19,252 | $ 20,195

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