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Loans and Allowance for Loan and Lease Losses - Loans By Credit Quality Indicators (Details) - USD ($) $ in Thousands		Mar. 31, 2021		Dec. 31, 2020		Mar. 31, 2020
Financing Receivable Recorded Investment [Line Items]
Loans		$ 670,497		$ 650,123		$ 550,992
As a percentage of total loans		100.00%		100.00%
FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 615,318		$ 591,000
ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		55,179		59,123
ALC [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 292,258		$ 289,674
As a percentage of total loans		99.29%		99.12%
ALC [Member] | Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 2,104		$ 2,578
As a percentage of total loans		0.71%		0.88%
ALC [Member] | Performing and Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 294,362		$ 292,252
As a percentage of total loans		100.00%		100.00%
Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 48,491				31,927
Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		54,180				44,029
Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		193,626				156,222
Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 82,349				100,186
Pass [Member]
Financing Receivable Recorded Investment [Line Items]
As a percentage of total loans		95.22%		95.33%
Pass [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 358,126		$ 341,137
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
As a percentage of total loans		3.21%		2.70%
Special Mention [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 12,081		$ 9,672
Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
As a percentage of total loans		1.58%		1.97%
Substandard [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 5,928		$ 7,062
Pass And Criticized [Member]
Financing Receivable Recorded Investment [Line Items]
As a percentage of total loans		100.00%		100.00%
Pass And Criticized [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 376,135		$ 357,871
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		48,491		37,282
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		48,491		37,282
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		54,180		54,326
Real Estate [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		54,180		54,326
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		193,626		184,528
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		193,626		184,528
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		82,349		88,856
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		79,090		85,271
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		3,259		3,585
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		80,448		86,665
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		1,901		2,191
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Performing and Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		82,349		88,856
Real Estate [Member] | Pass [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		47,929		36,719
Real Estate [Member] | Pass [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		51,639		54,326
Real Estate [Member] | Pass [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		180,533		170,338
Real Estate [Member] | Special Mention [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		557		558
Real Estate [Member] | Special Mention [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		2,541
Real Estate [Member] | Special Mention [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		8,852		8,572
Real Estate [Member] | Substandard [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		5		5
Real Estate [Member] | Substandard [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		4,241		5,618
Real Estate [Member] | Pass And Criticized [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		48,491		37,282
Real Estate [Member] | Pass And Criticized [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		54,180		54,326
Real Estate [Member] | Pass And Criticized [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		193,626		184,528
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		79,838	[1]	81,735	[1]	80,771
Commercial and Industrial Loans [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	[1]	79,838		81,735
Commercial and Industrial Loans [Member] | Pass [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		78,025		79,754
Commercial and Industrial Loans [Member] | Special Mention [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		131		542
Commercial and Industrial Loans [Member] | Substandard [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		1,682		1,439
Commercial and Industrial Loans [Member] | Pass And Criticized [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		79,838		81,735
Consumer Portfolio Segment [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		670,497
Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		26,998		29,788		36,307
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		6,153		6,344
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		20,845		23,444
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | ALC [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		26,844		29,679
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | ALC [Member] | Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		154		109
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | ALC [Member] | Performing and Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		26,998		29,788
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		31,075		32,094		31,568
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		31,075		32,094
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		31,026		31,816
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		49		278
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Performing and Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		31,075		32,094
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		153,940		141,514		$ 69,982
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		153,940		141,514
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		153,940		141,514
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] | Performing and Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 153,940		$ 141,514
[1] Includes equipment financing leases and PPP loans. As of March 31, 2021 and December 31, 2020, equipment finance leases totaled $6.7 million and $7.0 million, respectively, and PPP loans totaled $14.8 million and $11.9 million, respectively.

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+ 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=121593590&loc=d3e4428-111522

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