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Loans and Allowance for Loan Losses - Aging Analysis of Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Loans	$ 708,894	$ 650,123	$ 639,030
As a percentage of total loans	100.00%	100.00%
As a percentage of total loans, Total Past Due	0.34%	0.82%
As a percentage of total loans, Current	99.66%	99.18%
Financial Asset, 30 to 59 Days Past Due
As a percentage of total loans		0.37%
Financial Asset, 60 to 89 Days Past Due
As a percentage of total loans		0.17%
Financial Asset, Equal to or Greater than 90 Days Past Due
As a percentage of total loans		0.28%
Total Past Due
Loans	$ 2,443	$ 5,348
Current
Loans	706,451	644,775
Construction, Land Development and Other Land Loans [Member]
Loans	58,175		35,472
Secured by 1-4 Family Residential Properties [Member]
Loans	73,112		95,147
Secured By Multi family Residential Properties [Member]
Loans	51,420		49,197
Secured By Non-farm Non residential Properties [Member]
Loans	198,745		183,754
Direct Consumer [Member]
Loans	25,845
Direct Consumer [Member] | Total Past Due
Loans	819
Direct Consumer [Member] | Current
Loans	25,026
Branch Retail [Member]
Loans	29,764
Branch Retail [Member] | Total Past Due
Loans	539
Branch Retail [Member] | Current
Loans	29,225
Indirect Sales [Member]
Loans	194,154
Indirect Sales [Member] | Total Past Due
Loans	92
Indirect Sales [Member] | Current
Loans	194,062
ALC [Member]
Loans	51,956	59,123
ALC [Member] | Financial Asset, 30 to 59 Days Past Due
Loans	$ 2,007	2,436
As a percentage of total loans	0.28%
ALC [Member] | Financial Asset, 60 to 89 Days Past Due
Loans	$ 266	1,096
As a percentage of total loans	0.04%
ALC [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due
Loans	$ 170	1,816
As a percentage of total loans	0.02%
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Loans	$ 58,175	37,282
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Current
Loans	58,175	37,282
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Loans	73,112	88,856
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Total Past Due
Loans	433	1,115
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Current
Loans	72,679	87,741
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Loans	51,420	54,326
Real Estate [Member] | Secured By Multi family Residential Properties [Member] | Current
Loans	51,420	54,326
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Loans	198,745	184,528
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | Total Past Due
Loans		1,624
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | Current
Loans	198,745	182,904
Real Estate [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member]
Loans	2,568	3,585
Real Estate [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, 30 to 59 Days Past Due
Loans	417	799
Real Estate [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, 60 to 89 Days Past Due
Loans	16	244
Real Estate [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due
Loans		72
Real Estate [Member] | ALC [Member] | Secured By Non-farm Non residential Properties [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		287
Real Estate [Member] | ALC [Member] | Secured By Non-farm Non residential Properties [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due
Loans		1,337
Commercial and Industrial Loans [Member]
Loans	77,679	81,735	86,898
Commercial and Industrial Loans [Member] | Total Past Due
Loans	560	1,244
Commercial and Industrial Loans [Member] | Current
Loans	77,119	80,491
Commercial and Industrial Loans [Member] | ALC [Member] | Financial Asset, 30 to 59 Days Past Due
Loans	496	683
Commercial and Industrial Loans [Member] | ALC [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		561
Commercial and Industrial Loans [Member] | ALC [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due
Loans	64
Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Loans	25,845	29,788	30,048
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		257
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		191
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due
Loans		214
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Total Past Due
Loans		662
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Current
Loans		29,126
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Loans	29,764	32,094	33,145
Consumer Portfolio Segment [Member] | Branch Retail [Member] | Total Past Due
Loans		381
Consumer Portfolio Segment [Member] | Branch Retail [Member] | Current
Loans		31,713
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Loans	194,154	141,514	$ 125,369
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Total Past Due
Loans		322
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Current
Loans		141,192
Consumer Portfolio Segment [Member] | ALC [Member] | Direct Consumer [Member]
Loans	19,624	23,444
Consumer Portfolio Segment [Member] | ALC [Member] | Direct Consumer [Member] | Financial Asset, 30 to 59 Days Past Due
Loans	569
Consumer Portfolio Segment [Member] | ALC [Member] | Direct Consumer [Member] | Financial Asset, 60 to 89 Days Past Due
Loans	160
Consumer Portfolio Segment [Member] | ALC [Member] | Direct Consumer [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due
Loans	90
Consumer Portfolio Segment [Member] | ALC [Member] | Branch Retail [Member]
Loans	29,764	32,094
Consumer Portfolio Segment [Member] | ALC [Member] | Branch Retail [Member] | Financial Asset, 30 to 59 Days Past Due
Loans	469	176
Consumer Portfolio Segment [Member] | ALC [Member] | Branch Retail [Member] | Financial Asset, 60 to 89 Days Past Due
Loans	64	61
Consumer Portfolio Segment [Member] | ALC [Member] | Branch Retail [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due
Loans	6	144
Consumer Portfolio Segment [Member] | ALC [Member] | Indirect Sales [Member] | Financial Asset, 30 to 59 Days Past Due
Loans	56	234
Consumer Portfolio Segment [Member] | ALC [Member] | Indirect Sales [Member] | Financial Asset, 60 to 89 Days Past Due
Loans	26	39
Consumer Portfolio Segment [Member] | ALC [Member] | Indirect Sales [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due
Loans	$ 10	$ 49

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