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Loans and Allowance for Credit Losses - Loans By Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable Recorded Investment [Line Items]
Loans	$ 815,300	$ 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	$ 90,051	$ 53,914
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	56,506	67,852
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	199,116	200,156
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	83,876	87,995
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	59,369	73,546
Consumer Portfolio Segment [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	410,258
Consumer Portfolio Segment [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	409,268
Consumer Portfolio Segment [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	83,876
Consumer Portfolio Segment [Member] | Secured by 1-4 Family Residential Properties [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	83,028
Consumer Portfolio Segment [Member] | Secured by 1-4 Family Residential Properties [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	848
Consumer Portfolio Segment [Member] | Direct [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	6,544	9,851
Consumer Portfolio Segment [Member] | Direct [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	6,544
Consumer Portfolio Segment [Member] | Direct [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	990
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	9,648	13,992
Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	9,648
Consumer Portfolio Segment [Member] | Indirect [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	310,190	266,567
Consumer Portfolio Segment [Member] | Indirect [Member] | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	310,048
Consumer Portfolio Segment [Member] | Indirect [Member] | Nonperforming Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Loans	$ 142
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] | 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] | 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] | 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] | 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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