Loans and Allowance for Loan Losses - Loans By Credit Quality Indicators (Details) - USD ($)
$ in Thousands

Sep. 30, 2022

Dec. 31, 2021

Sep. 30, 2021

Financing Receivable Recorded Investment [Line Items]

Loans

$ 751,852

$ 710,944

$ 708,894

As a percentage of total loans

100.00%

Construction, Land Development and Other Land Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

$ 36,740

58,175

Secured By Multi family Residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

72,446

51,420

Secured By Non-farm Non residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

200,505

198,745

Direct Consumer [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

12,279

Branch Retail [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

16,278

Indirect [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

262,742

Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

36,740

$ 67,048

Real Estate [Member] | Secured By Multi family Residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

72,446

46,000

Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

200,505

197,901

Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

84,911

72,727

Commercial and Industrial Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

65,951

73,947

77,679

Consumer Portfolio Segment [Member] | Direct Consumer [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

12,279

21,689

25,845

Consumer Portfolio Segment [Member] | Branch Retail [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

16,278

25,692

29,764

Consumer Portfolio Segment [Member] | Indirect [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

262,742

205,940

$ 194,154

FUSB [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

727,300

667,247

FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

36,740

67,048

FUSB [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

72,446

46,000

FUSB [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

200,505

197,901

FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

83,231

70,439

FUSB [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

5,685

5,972

FUSB [Member] | Consumer Portfolio Segment [Member] | Indirect [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

262,742

205,940

FUSB [Member] | Pass

Financing Receivable Recorded Investment [Line Items]

Loans

$ 369,206

$ 372,059

As a percentage of total loans

98.29%

96.66%

FUSB [Member] | Pass | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

$ 35,692

$ 67,046

FUSB [Member] | Pass | Real Estate [Member] | Secured By Multi family Residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

72,446

43,472

FUSB [Member] | Pass | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

198,004

189,425

FUSB [Member] | Pass | Commercial and Industrial Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

63,064

72,116

FUSB [Member] | Special Mention

Financing Receivable Recorded Investment [Line Items]

Loans

$ 656

$ 10,303

As a percentage of total loans

0.17%

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

$ 656

7,442

FUSB [Member] | Special Mention | Commercial and Industrial Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

333

FUSB [Member] | Substandard

Financing Receivable Recorded Investment [Line Items]

Loans

$ 5,780

$ 2,534

As a percentage of total loans

1.54%

0.66%

FUSB [Member] | Substandard | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

$ 1,048

$ 2

FUSB [Member] | Substandard | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

1,845

1,034

FUSB [Member] | Substandard | Commercial and Industrial Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

2,887

1,498

FUSB [Member] | Pass And Criticized [Member}

Financing Receivable Recorded Investment [Line Items]

Loans

$ 375,642

$ 384,896

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

$ 36,740

$ 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

72,446

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

200,505

197,901

FUSB [Member] | Pass And Criticized [Member} | Commercial and Industrial Loans [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

65,951

73,947

ALC [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

24,552

43,697

ALC [Member] | Performing Financial Instruments

Financing Receivable Recorded Investment [Line Items]

Loans

$ 374,595

$ 323,891

As a percentage of total loans

99.57%

99.34%

ALC [Member] | Nonperforming Financial Instruments

Financing Receivable Recorded Investment [Line Items]

Loans

$ 1,615

$ 2,157

As a percentage of total loans

0.43%

0.66%

ALC [Member] | Performing And Non Performing [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

$ 376,210

$ 326,048

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

$ 1,680

$ 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

83,611

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

1,300

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

84,911

72,727

ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

6,594

15,717

ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Performing Financial Instruments

Financing Receivable Recorded Investment [Line Items]

Loans

12,112

20,939

ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Nonperforming Financial Instruments

Financing Receivable Recorded Investment [Line Items]

Loans

167

750

ALC [Member] | Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Performing And Non Performing [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

12,279

21,689

ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

16,278

25,692

ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing Financial Instruments

Financing Receivable Recorded Investment [Line Items]

Loans

16,130

25,486

ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Nonperforming Financial Instruments

Financing Receivable Recorded Investment [Line Items]

Loans

148

206

ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] | Performing And Non Performing [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

16,278

25,692

ALC [Member] | Consumer Portfolio Segment [Member] | Indirect [Member] | Performing Financial Instruments

Financing Receivable Recorded Investment [Line Items]

Loans

262,742

205,940

ALC [Member] | Consumer Portfolio Segment [Member] | Indirect [Member] | Performing And Non Performing [Member]

Financing Receivable Recorded Investment [Line Items]

Loans

$ 262,742

$ 205,940