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Loans - Schedule of Net Loans (Details) $ in Thousands | Sep. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | --- | --- | --- | --- | ---
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 3,511,125 |  | $ 3,371,789 |  |  |
Less: Allowance for credit losses | (37,230) | $ (36,908) | (34,340) | $ (26,887) | $ (24,529) | $ (19,473)
Net loans | 3,473,895 |  | 3,337,449 |  |  |
Net deferred loan origination fees (costs) included in the above loan table | $ 7,872 |  | $ 8,789 |  |  |
Percentage of Total | 1.000 |  | 1.000 |  |  |
Farmland |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 23,417 |  | $ 23,316 |  |  |
Less: Allowance for credit losses | $ (98) | (124) | $ (221) |  |  |
Percentage of Total | 0.007 |  | 0.007 |  |  |
Owner-occupied, nonfarm nonresidential properties |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 421,439 |  | $ 407,924 |  |  |
Less: Allowance for credit losses | $ (3,037) | (2,880) | $ (3,700) |  |  |
Percentage of Total | 0.120 |  | 0.121 |  |  |
Agricultural production and other loans to farmers |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 1,387 |  | $ 2,664 |  |  |
Less: Allowance for credit losses | $ (7) | (12) | $ (24) |  |  |
Percentage of Total | 0.000 |  | 0.001 |  |  |
Commercial and Industrial |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 663,769 |  | $ 663,550 |  |  |
Less: Allowance for credit losses | $ (8,330) | (7,312) | $ (6,233) |  |  |
Percentage of Total | 0.189 |  | 0.197 |  |  |
Commercial and Industrial | PPP Loans |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 85,354 |  |  | 222,972 |  |
Less: Allowance for credit losses | 0 |  |  | 0 |  |
Obligations (other than securities and leases) of states and political subdivisions |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | 139,253 |  | $ 132,818 |  |  |
Less: Allowance for credit losses | $ (1,879) | (2,325) | $ (998) |  |  |
Percentage of Total | 0.040 |  | 0.039 |  |  |
Other loans |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 12,087 |  | $ 11,961 |  |  |
Less: Allowance for credit losses | $ (102) | (117) | $ (68) |  |  |
Percentage of Total | 0.003 |  | 0.004 |  |  |
Other construction loans and all land development and other land loans |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 280,262 |  | $ 205,734 |  |  |
Less: Allowance for credit losses | $ (2,369) | (2,364) | $ (1,956) |  |  |
Percentage of Total | 0.080 |  | 0.061 |  |  |
Multifamily (5 or more) residential properties |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 213,906 |  | $ 212,815 |  |  |
Less: Allowance for credit losses | $ (2,095) | (2,314) | $ (2,724) |  |  |
Percentage of Total | 0.061 |  | 0.063 |  |  |
Non-owner occupied, nonfarm nonresidential properties |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 645,951 |  | $ 640,945 |  |  |
Less: Allowance for credit losses | $ (7,279) | (10,162) | $ (8,658) |  |  |
Percentage of Total | 0.184 |  | 0.190 |  |  |
1-4 Family Construction |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 31,775 |  | $ 27,768 |  |  |
Less: Allowance for credit losses | $ (226) | (110) | $ (82) |  |  |
Percentage of Total | 0.009 |  | 0.008 |  |  |
Home equity lines of credit |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 107,225 |  | $ 109,444 |  |  |
Less: Allowance for credit losses | $ (1,220) | (1,029) | $ (985) |  |  |
Percentage of Total | 0.031 |  | 0.032 |  |  |
Residential Mortgages secured by first liens |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 810,190 |  | $ 777,030 |  |  |
Less: Allowance for credit losses | $ (6,425) | (4,398) | $ (4,539) |  |  |
Percentage of Total | 0.231 |  | 0.230 |  |  |
Residential Mortgages secured by junior liens |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 57,342 |  | $ 53,726 |  |  |
Less: Allowance for credit losses | $ (549) | (408) | $ (241) |  |  |
Percentage of Total | 0.016 |  | 0.016 |  |  |
Other revolving credit plans |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 26,226 |  | $ 25,507 |  |  |
Less: Allowance for credit losses | $ (528) | (459) | $ (507) |  |  |
Percentage of Total | 0.007 |  | 0.008 |  |  |
Automobile |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 22,311 |  | $ 25,344 |  |  |
Less: Allowance for credit losses | $ (278) | (241) | $ (132) |  |  |
Percentage of Total | 0.006 |  | 0.008 |  |  |
Other consumer |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 45,003 |  | $ 42,792 |  |  |
Less: Allowance for credit losses | $ (2,490) | (2,402) | $ (2,962) |  |  |
Percentage of Total | 0.013 |  | 0.013 |  |  |
Credit cards |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 9,313 |  | $ 8,115 |  |  |
Less: Allowance for credit losses | $ (112) | (68) | $ (66) | (143) | (114) | (84)
Percentage of Total | 0.003 |  | 0.002 |  |  |
Overdrafts |  |  |  |  |  |
Loan Portfolio By Loan Grade [Line Items] |  |  |  |  |  |
Loans | $ 269 |  | $ 336 |  |  |
Less: Allowance for credit losses | $ (206) | $ (183) | $ (244) | $ (113) | $ (169) | $ (240)
Percentage of Total | 0.000 |  | 0.000 |  |  |

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