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Loans and Allowance for Loan Losses - Loans By Credit Quality Indicators (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Loans		$ 556,053	$ 525,870
FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		442,455	417,496
ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		113,598	108,374
ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		112,614	107,145
ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		984	1,229
Pass [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		431,615	408,188
Special Mention [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		4,534	5,041
Substandard [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		6,306	4,267
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		30,094	41,340
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		30,094	41,340
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		104,537	110,756
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		98,971	102,971
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		5,566	7,785
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		5,394	7,657
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		172	128
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		50,910	23,009
Real Estate [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		50,910	23,009
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		162,981	156,162
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		162,981	156,162
Real Estate [Member] | Other Real Estate Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		726	1,308
Real Estate [Member] | Other Real Estate Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		726	1,308
Real Estate [Member] | Pass [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		29,740	40,200
Real Estate [Member] | Pass [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		96,277	100,485
Real Estate [Member] | Pass [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		50,910	23,009
Real Estate [Member] | Pass [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		157,718	153,077
Real Estate [Member] | Pass [Member] | Other Real Estate Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		726	1,308
Real Estate [Member] | Special Mention [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		354	914
Real Estate [Member] | Special Mention [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		505	154
Real Estate [Member] | Special Mention [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		2,961	1,996
Real Estate [Member] | Substandard [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans			226
Real Estate [Member] | Substandard [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		2,189	2,332
Real Estate [Member] | Substandard [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		2,302	1,089
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	[1]	90,957	85,779
Commercial and Industrial Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	[1]	90,957	85,779
Commercial and Industrial Loans [Member] | Pass [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		88,463	83,261
Commercial and Industrial Loans [Member] | Special Mention [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		714	1,977
Commercial and Industrial Loans [Member] | Substandard [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		1,780	541
Consumer Portfolio Segment [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		7,816	6,927
Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		38,040	38,583
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		7,816	6,927
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		30,224	31,656
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		29,693	30,826
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		531	830
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		32,305	28,324
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		32,305	28,324
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		32,024	28,171
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		281	153
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		45,503	40,609
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		45,503	40,609
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		45,503	40,491
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans			118
Consumer Portfolio Segment [Member] | Pass [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		7,781	6,848
Consumer Portfolio Segment [Member] | Substandard [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 35	$ 79
[1] Includes equipment financing leases.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

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