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Loans and Allowance for Loan Losses - Loans By Credit Quality Indicators (Details) - USD ($) $ in Thousands		Jun. 30, 2021		Dec. 31, 2020		Jun. 30, 2020
Financing Receivable Recorded Investment [Line Items]
Loans		$ 689,549		$ 650,123		$ 577,886
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		$ 53,425				31,384
Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		53,811				48,807
Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		191,398				160,683
Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		78,815				93,010
Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		26,937
Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		31,688
Indirect Sales [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		176,116
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		53,425		$ 37,282
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		53,811		54,326
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		191,398		184,528
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		78,815		88,856
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		77,359	[1]	81,735	[1]	87,771
Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		26,937		29,788		33,299
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		31,688		32,094		33,000
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		176,116		141,514		$ 89,932
FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		634,424		591,000
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		53,425		37,282
FUSB [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		53,811		54,326
FUSB [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		191,398		184,528
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		75,968		85,271
FUSB [Member] | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	[1]	77,359		81,735
FUSB [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		6,347		6,344
FUSB [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		176,116		141,514
FUSB [Member] | Pass
Financing Receivable Recorded Investment [Line Items]
Loans		$ 357,367		$ 341,137
As a percentage of total loans		95.05%		95.33%
FUSB [Member] | Pass | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 51,303		$ 36,719
FUSB [Member] | Pass | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		51,270		54,326
FUSB [Member] | Pass | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		178,582		170,338
FUSB [Member] | Pass | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		76,212		79,754
FUSB [Member] | Special Mention
Financing Receivable Recorded Investment [Line Items]
Loans		$ 16,918		$ 9,672
As a percentage of total loans		4.50%		2.70%
FUSB [Member] | Special Mention | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 2,120		$ 558
FUSB [Member] | Special Mention | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		2,541
FUSB [Member] | Special Mention | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		11,777		8,572
FUSB [Member] | Special Mention | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		480		542
FUSB [Member] | Substandard
Financing Receivable Recorded Investment [Line Items]
Loans		$ 1,708		$ 7,062
As a percentage of total loans		0.45%		1.97%
FUSB [Member] | Substandard | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 2		$ 5
FUSB [Member] | Substandard | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		1,039		5,618
FUSB [Member] | Substandard | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		667		1,439
FUSB [Member] | Pass And Criticized [Member}
Financing Receivable Recorded Investment [Line Items]
Loans		$ 375,993		$ 357,871
As a percentage of total loans		100.00%		100.00%
FUSB [Member] | Pass And Criticized [Member} | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 53,425		$ 37,282
FUSB [Member] | Pass And Criticized [Member} | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		53,811		54,326
FUSB [Member] | Pass And Criticized [Member} | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		191,398		184,528
FUSB [Member] | Pass And Criticized [Member} | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		77,359		81,735
ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		55,125		59,123
ALC [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		$ 312,145		$ 289,674
As a percentage of total loans		99.55%		99.12%
ALC [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		$ 1,411		$ 2,578
As a percentage of total loans		0.45%		0.88%
ALC [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 313,556		$ 292,252
As a percentage of total loans		100.00%		100.00%
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 2,847		$ 3,585
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		77,428		86,665
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		1,387		2,191
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		78,815		88,856
ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		20,590		23,444
ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		26,913		29,679
ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		24		109
ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		26,937		29,788
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		31,688		32,094
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		31,688		31,816
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans				278
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		31,688		32,094
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		176,116		141,514
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 176,116		$ 141,514
[1] Includes equipment financing leases and PPP loans. As of June 30, 2021 and December 31, 2020, equipment finance leases totaled $6.3 million and $7.0 million, respectively, and PPP loans totaled $11.6 million and $11.9 million, respectively.

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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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