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Loans and Allowance for Loan Losses - Loans By Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Financing Receivable Recorded Investment [Line Items]
Loans	$ 715,779	$ 710,944	$ 689,549
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	$ 40,625		53,425
Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	66,848		53,811
Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	187,041		191,398
Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	69,098		78,815
Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	15,419
Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	18,634
Indirect [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	252,206
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	40,625	$ 67,048
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	66,848	46,000
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	187,041	197,901
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	69,098	72,727
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	65,908	73,947	77,359
Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	15,419	21,689	26,937
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	18,634	25,692	31,688
Consumer Portfolio Segment [Member] | Indirect [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	252,206	205,940	$ 176,116
FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	686,460	667,247
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	40,625	67,048
FUSB [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	66,848	46,000
FUSB [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	187,041	197,901
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	67,227	70,439
FUSB [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	6,605	5,972
FUSB [Member] | Consumer Portfolio Segment [Member] | Indirect [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	252,206	205,940
FUSB [Member] | Pass
Financing Receivable Recorded Investment [Line Items]
Loans	$ 355,802	$ 372,059
As a percentage of total loans	98.72%	96.66%
FUSB [Member] | Pass | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	$ 40,625	$ 67,046
FUSB [Member] | Pass | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	66,848	43,472
FUSB [Member] | Pass | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	183,943	189,425
FUSB [Member] | Pass | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	64,386	72,116
FUSB [Member] | Special Mention
Financing Receivable Recorded Investment [Line Items]
Loans	$ 2,712	$ 10,303
As a percentage of total loans	0.75%	2.68%
FUSB [Member] | Special Mention | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 2,528
FUSB [Member] | Special Mention | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	$ 2,085	7,442
FUSB [Member] | Special Mention | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	627	333
FUSB [Member] | Substandard
Financing Receivable Recorded Investment [Line Items]
Loans	$ 1,908	$ 2,534
As a percentage of total loans	0.53%	0.66%
FUSB [Member] | Substandard | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 2
FUSB [Member] | Substandard | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	$ 1,013	1,034
FUSB [Member] | Substandard | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	895	1,498
FUSB [Member] | Pass And Criticized [Member}
Financing Receivable Recorded Investment [Line Items]
Loans	$ 360,422	$ 384,896
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	$ 40,625	$ 67,048
FUSB [Member] | Pass And Criticized [Member} | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	66,848	46,000
FUSB [Member] | Pass And Criticized [Member} | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	187,041	197,901
FUSB [Member] | Pass And Criticized [Member} | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	65,908	73,947
ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	29,319	43,697
ALC [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	$ 353,548	$ 323,891
As a percentage of total loans	99.49%	99.34%
ALC [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	$ 1,809	$ 2,157
As a percentage of total loans	0.51%	0.66%
ALC [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	$ 355,357	$ 326,048
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	$ 1,871	$ 2,288
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	67,774	71,526
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	1,324	1,201
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	69,098	72,727
ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	8,814	15,717
ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	15,144	20,939
ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	275	750
ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	15,419	21,689
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	18,634	25,692
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	18,424	25,486
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	210	206
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	18,634	25,692
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	252,206	205,940
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	$ 252,206	$ 205,940

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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 https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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