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Loans and Allowance for Loan Losses - Aging Analysis of Past Due Loans (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Loans		$ 556,053	$ 525,870
FUSB [Member]
Loans		442,455	417,496
Total Past Due		2,470	6,214
Current		439,985	411,282
FUSB [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		292	4,552
FUSB [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		87	661
FUSB [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans		2,091	1,001
ALC [Member]
Loans		113,598	108,374
Total Past Due		2,497	2,796
Current		111,101	105,578
ALC [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		1,016	971
ALC [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		497	596
ALC [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans		984	1,229
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Loans		30,094	41,340
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Loans		104,537	110,756
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Loans		50,910	23,009
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Loans		162,981	156,162
Real Estate [Member] | Other Real Estate Loans [Member]
Loans		726	1,308
Real Estate [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member]
Loans		30,094	41,340
Total Past Due			1,071
Current		30,094	40,269
Real Estate [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member] | Financial Asset, 30 to 59 Days Past Due
Loans			415
Real Estate [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member] | Financial Asset, 60 to 89 Days Past Due
Loans			582
Real Estate [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans			74
Real Estate [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member]
Loans		98,971	102,971
Total Past Due		949	1,566
Current		98,022	101,405
Real Estate [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		194	991
Real Estate [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		83	36
Real Estate [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans		672	539
Real Estate [Member] | FUSB [Member] | Secured By Multi family Residential Properties [Member]
Loans		50,910	23,009
Current		50,910	23,009
Real Estate [Member] | FUSB [Member] | Secured By Non-farm Non residential Properties [Member]
Loans		162,981	156,162
Total Past Due		1,449	471
Current		161,532	155,691
Real Estate [Member] | FUSB [Member] | Secured By Non-farm Non residential Properties [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		30	458
Real Estate [Member] | FUSB [Member] | Secured By Non-farm Non residential Properties [Member] | Financial Asset, 60 to 89 Days Past Due
Loans			13
Real Estate [Member] | FUSB [Member] | Secured By Non-farm Non residential Properties [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans		1,419
Real Estate [Member] | FUSB [Member] | Other Real Estate Loans [Member]
Loans		726	1,308
Current		726	1,308
Real Estate [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member]
Loans		5,566	7,785
Total Past Due		262	253
Current		5,304	7,532
Real Estate [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		65	60
Real Estate [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		25	65
Real Estate [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans		172	128
Commercial and Industrial Loans [Member]
Loans	[1]	90,957	85,779
Commercial and Industrial Loans [Member] | FUSB [Member]
Loans	[1]	90,957	85,779
Total Past Due		56	3,022
Current		90,901	82,757
Commercial and Industrial Loans [Member] | FUSB [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		56	2,608
Commercial and Industrial Loans [Member] | FUSB [Member] | Financial Asset, 60 to 89 Days Past Due
Loans			30
Commercial and Industrial Loans [Member] | FUSB [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans			384
Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Loans		38,040	38,583
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Loans		32,305	28,324
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Loans		45,503	40,609
Consumer Portfolio Segment [Member] | FUSB [Member]
Loans		7,816	6,927
Total Past Due		16
Current		7,800
Consumer Portfolio Segment [Member] | FUSB [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		12
Consumer Portfolio Segment [Member] | FUSB [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		4
Consumer Portfolio Segment [Member] | FUSB [Member] | Consumer Loans [Member]
Loans		7,816	6,927
Total Past Due			84
Current			6,843
Consumer Portfolio Segment [Member] | FUSB [Member] | Consumer Loans [Member] | Financial Asset, 30 to 59 Days Past Due
Loans			80
Consumer Portfolio Segment [Member] | FUSB [Member] | Consumer Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans			4
Consumer Portfolio Segment [Member] | ALC [Member] | Consumer Loans [Member]
Loans		30,224	31,656
Total Past Due		1,189	1,747
Current		29,035	29,909
Consumer Portfolio Segment [Member] | ALC [Member] | Consumer Loans [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		375	563
Consumer Portfolio Segment [Member] | ALC [Member] | Consumer Loans [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		283	354
Consumer Portfolio Segment [Member] | ALC [Member] | Consumer Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans		531	830
Consumer Portfolio Segment [Member] | ALC [Member] | Branch Retail [Member]
Loans		32,305	28,324
Total Past Due		914	415
Current		31,391	27,909
Consumer Portfolio Segment [Member] | ALC [Member] | Branch Retail [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		444	164
Consumer Portfolio Segment [Member] | ALC [Member] | Branch Retail [Member] | Financial Asset, 60 to 89 Days Past Due
Loans		189	98
Consumer Portfolio Segment [Member] | ALC [Member] | Branch Retail [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans		281	153
Consumer Portfolio Segment [Member] | ALC [Member] | Indirect Sales [Member]
Loans		45,503	40,609
Total Past Due		132	381
Current		45,371	40,228
Consumer Portfolio Segment [Member] | ALC [Member] | Indirect Sales [Member] | Financial Asset, 30 to 59 Days Past Due
Loans		$ 132	184
Consumer Portfolio Segment [Member] | ALC [Member] | Indirect Sales [Member] | Financial Asset, 60 to 89 Days Past Due
Loans			79
Consumer Portfolio Segment [Member] | ALC [Member] | Indirect Sales [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans			$ 118
[1] Includes equipment financing leases.

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