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Loans - Aging of Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | $ 3,511,125 | $ 3,371,789
30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 3,295 | 4,430
60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1,219 | 2,430
Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 5,405 | 20,682
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 9,919 | 27,542
Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 3,501,206 | 3,344,247
Farmland |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 23,417 | 23,316
Farmland | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 163 | 195
Farmland | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 388 | 0
Farmland | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 1,211
Farmland | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 551 | 1,406
Farmland | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 22,866 | 21,910
Owner-occupied, nonfarm nonresidential properties |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 421,439 | 407,924
Owner-occupied, nonfarm nonresidential properties | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 533 | 10
Owner-occupied, nonfarm nonresidential properties | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 885
Owner-occupied, nonfarm nonresidential properties | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 826 | 732
Owner-occupied, nonfarm nonresidential properties | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1,359 | 1,627
Owner-occupied, nonfarm nonresidential properties | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 420,080 | 406,297
Agricultural production and other loans to farmers |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1,387 | 2,664
Agricultural production and other loans to farmers | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Agricultural production and other loans to farmers | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Agricultural production and other loans to farmers | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Agricultural production and other loans to farmers | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Agricultural production and other loans to farmers | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1,387 | 2,664
Commercial and Industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 663,769 | 663,550
Commercial and Industrial | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 370 | 476
Commercial and Industrial | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 25 | 335
Commercial and Industrial | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 212 | 3,887
Commercial and Industrial | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 607 | 4,698
Commercial and Industrial | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 663,162 | 658,852
Obligations (other than securities and leases) of states and political subdivisions |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 139,253 | 132,818
Obligations (other than securities and leases) of states and political subdivisions | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Obligations (other than securities and leases) of states and political subdivisions | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Obligations (other than securities and leases) of states and political subdivisions | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Obligations (other than securities and leases) of states and political subdivisions | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Obligations (other than securities and leases) of states and political subdivisions | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 139,253 | 132,818
Other loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 12,087 | 11,961
Other loans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Other loans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Other loans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Other loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Other loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 12,087 | 11,961
Other construction loans and all land development and other land loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 280,262 | 205,734
Other construction loans and all land development and other land loans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Other construction loans and all land development and other land loans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Other construction loans and all land development and other land loans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 77 | 1,917
Other construction loans and all land development and other land loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 77 | 1,917
Other construction loans and all land development and other land loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 280,185 | 203,817
Multifamily (5 or more) residential properties |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 213,906 | 212,815
Multifamily (5 or more) residential properties | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Multifamily (5 or more) residential properties | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Multifamily (5 or more) residential properties | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 209 | 0
Multifamily (5 or more) residential properties | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 209 | 0
Multifamily (5 or more) residential properties | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 213,697 | 212,815
Non-owner occupied, nonfarm nonresidential properties |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 645,951 | 640,945
Non-owner occupied, nonfarm nonresidential properties | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 314
Non-owner occupied, nonfarm nonresidential properties | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 156
Non-owner occupied, nonfarm nonresidential properties | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1,827 | 10,184
Non-owner occupied, nonfarm nonresidential properties | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1,827 | 10,654
Non-owner occupied, nonfarm nonresidential properties | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 644,124 | 630,291
1-4 Family Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 31,775 | 27,768
1-4 Family Construction | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
1-4 Family Construction | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
1-4 Family Construction | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
1-4 Family Construction | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
1-4 Family Construction | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 31,775 | 27,768
Home equity lines of credit |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 107,225 | 109,444
Home equity lines of credit | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 385 | 166
Home equity lines of credit | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 38 | 235
Home equity lines of credit | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 152 | 486
Home equity lines of credit | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 575 | 887
Home equity lines of credit | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 106,650 | 108,557
Residential Mortgages secured by first liens |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 810,190 | 777,030
Residential Mortgages secured by first liens | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1,350 | 2,834
Residential Mortgages secured by first liens | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 592 | 629
Residential Mortgages secured by first liens | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1,841 | 1,911
Residential Mortgages secured by first liens | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 3,783 | 5,374
Residential Mortgages secured by first liens | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 806,407 | 771,656
Residential Mortgages secured by junior liens |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 57,342 | 53,726
Residential Mortgages secured by junior liens | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 25 | 8
Residential Mortgages secured by junior liens | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Residential Mortgages secured by junior liens | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 11 | 66
Residential Mortgages secured by junior liens | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 36 | 74
Residential Mortgages secured by junior liens | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 57,306 | 53,652
Other revolving credit plans |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 26,226 | 25,507
Other revolving credit plans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 100 | 36
Other revolving credit plans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 7 | 19
Other revolving credit plans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Other revolving credit plans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 107 | 55
Other revolving credit plans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 26,119 | 25,452
Automobile |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 22,311 | 25,344
Automobile | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 24 | 73
Automobile | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 5 | 0
Automobile | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 9
Automobile | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 29 | 82
Automobile | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 22,282 | 25,262
Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 45,003 | 42,792
Other consumer | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 290 | 246
Other consumer | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 163 | 132
Other consumer | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 217 | 245
Other consumer | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 670 | 623
Other consumer | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 44,333 | 42,169
Credit cards |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 9,313 | 8,115
Credit cards | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 55 | 72
Credit cards | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 1 | 39
Credit cards | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 33 | 34
Credit cards | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 89 | 145
Credit cards | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 9,224 | 7,970
Overdrafts |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 269 | 336
Overdrafts | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Overdrafts | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Overdrafts | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Overdrafts | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 0 | 0
Overdrafts | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | $ 269 | $ 336

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