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Loans and Allowance for Loan Losses - Loans By Credit Quality Indicators (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Loans		$ 555,338	$ 525,870
FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		441,849	417,496
ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		113,489	108,374
ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		112,705	107,145
ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		784	1,229
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		27,348	41,340
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		27,348	41,340
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		109,336	110,756
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		103,269	102,971
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		6,067	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		5,936	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		131	128
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		46,843	23,009
Real Estate [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		46,843	23,009
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		164,941	156,162
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		164,941	156,162
Real Estate [Member] | Other Real Estate Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		842	1,308
Real Estate [Member] | Other Real Estate Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		842	1,308
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	[1]	90,470	85,779
Commercial and Industrial Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	[1]	90,470	85,779
Consumer Portfolio Segment [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		8,136	6,927
Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		37,477	38,583
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		8,136	6,927
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		29,341	31,656
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		28,908	30,826
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		433	830
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		30,008	28,324
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		30,008	28,324
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		29,858	28,171
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		150	153
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		48,073	40,609
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		48,073	40,609
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] | Performing Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		48,003	40,491
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		70	118
Pass [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		428,643	408,188
Pass [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		26,997	40,200
Pass [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		101,001	100,485
Pass [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		46,843	23,009
Pass [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		159,511	153,077
Pass [Member] | Real Estate [Member] | Other Real Estate Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		842	1,308
Pass [Member] | Commercial and Industrial Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		85,353	83,261
Pass [Member] | Consumer Portfolio Segment [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		8,096	6,848
Special Mention [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		5,630	5,041
Special Mention [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		351	914
Special Mention [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		137	154
Special Mention [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		4,422	1,996
Special Mention [Member] | Commercial and Industrial Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		720	1,977
Substandard [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		7,576	4,267
Substandard [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans			226
Substandard [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		2,131	2,332
Substandard [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		1,008	1,089
Substandard [Member] | Commercial and Industrial Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		4,397	541
Substandard [Member] | Consumer Portfolio Segment [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 40	$ 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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