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Loans and Allowance for Credit Losses - Loans By Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable Recorded Investment [Line Items]
Loans	$ 814,494	$ 773,873
As a percentage of total loans	100.00%	100.00%
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	$ 91,231	$ 53,914
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	54,719	67,852
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	204,270	200,156
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	85,101	87,995
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	60,568	73,546
Consumer Portfolio Segment [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	403,706
Consumer Portfolio Segment [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	402,754
Consumer Portfolio Segment [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	85,101
Consumer Portfolio Segment [Member] | Secured by 1-4 Family Residential Properties [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	84,219
Consumer Portfolio Segment [Member] | Secured by 1-4 Family Residential Properties [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	882
Consumer Portfolio Segment [Member] | Direct [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	7,593	9,851
Consumer Portfolio Segment [Member] | Direct [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	7,593
Consumer Portfolio Segment [Member] | Direct [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	952
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	10,830	13,992
Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	10,830
Consumer Portfolio Segment [Member] | Indirect [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	300,182	266,567
Consumer Portfolio Segment [Member] | Indirect [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	300,112
Consumer Portfolio Segment [Member] | Indirect [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	70
FUSB [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	800,272	753,698
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	91,231	53,914
FUSB [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	54,719	67,852
FUSB [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	204,270	200,156
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	84,052	86,518
FUSB [Member] | Consumer Portfolio Segment [Member] | Direct [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	5,250	5,145
FUSB [Member] | Consumer Portfolio Segment [Member] | Indirect [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	300,182	266,567
FUSB [Member] | Pass
Financing Receivable Recorded Investment [Line Items]
Loans		$ 389,270
As a percentage of total loans		98.43%
FUSB [Member] | Pass | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 53,914
FUSB [Member] | Pass | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		67,852
FUSB [Member] | Pass | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		197,004
FUSB [Member] | Pass | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		70,500
FUSB [Member] | Special Mention
Financing Receivable Recorded Investment [Line Items]
Loans		$ 651
As a percentage of total loans		0.17%
FUSB [Member] | Special Mention | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 651
FUSB [Member] | Substandard
Financing Receivable Recorded Investment [Line Items]
Loans		$ 5,547
As a percentage of total loans		1.40%
FUSB [Member] | Substandard | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 2,501
FUSB [Member] | Substandard | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		3,046
FUSB [Member] | Pass And Criticized [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 395,468
As a percentage of total loans		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		$ 53,914
FUSB [Member] | Pass And Criticized [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		67,852
FUSB [Member] | Pass And Criticized [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		200,156
FUSB [Member] | Pass And Criticized [Member] | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		73,546
ALC [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	14,222	20,175
ALC [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		$ 377,132
As a percentage of total loans		99.66%
ALC [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		$ 1,273
As a percentage of total loans		0.34%
ALC [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 378,405
As a percentage of total loans		100.00%
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	1,049	$ 1,477
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		86,871
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		1,124
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		87,995
ALC [Member] | Consumer Portfolio Segment [Member] | Direct [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	2,343	4,706
ALC [Member] | Consumer Portfolio Segment [Member] | Direct [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		9,805
ALC [Member] | Consumer Portfolio Segment [Member] | Direct [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		46
ALC [Member] | Consumer Portfolio Segment [Member] | Direct [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		9,851
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	$ 10,830	13,992
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		13,960
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		32
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		13,992
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		266,496
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans		71
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect [Member] | Performing And Non Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Loans		$ 266,567

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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