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Loans and Allowance for Loan Losses - Loans By Credit Quality Indicators (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | $ 556,053 | $ 525,870
FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 442,455 | 417,496
ALC [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 113,598 | 108,374
ALC [Member] | Performing Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 112,614 | 107,145
ALC [Member] | Nonperforming Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 984 | 1,229
Pass [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 431,615 | 408,188
Special Mention [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 4,534 | 5,041
Substandard [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 6,306 | 4,267
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 30,094 | 41,340
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 30,094 | 41,340
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 104,537 | 110,756
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 98,971 | 102,971
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 5,566 | 7,785
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Performing Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 5,394 | 7,657
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Nonperforming Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 172 | 128
Real Estate [Member] | Secured By Multi family Residential Properties [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 50,910 | 23,009
Real Estate [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 50,910 | 23,009
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 162,981 | 156,162
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 162,981 | 156,162
Real Estate [Member] | Other Real Estate Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 726 | 1,308
Real Estate [Member] | Other Real Estate Loans [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 726 | 1,308
Real Estate [Member] | Pass [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 29,740 | 40,200
Real Estate [Member] | Pass [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 96,277 | 100,485
Real Estate [Member] | Pass [Member] | Secured By Multi family Residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 50,910 | 23,009
Real Estate [Member] | Pass [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 157,718 | 153,077
Real Estate [Member] | Pass [Member] | Other Real Estate Loans [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 726 | 1,308
Real Estate [Member] | Special Mention [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 354 | 914
Real Estate [Member] | Special Mention [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 505 | 154
Real Estate [Member] | Special Mention [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 2,961 | 1,996
Real Estate [Member] | Substandard [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  |  | 226
Real Estate [Member] | Substandard [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 2,189 | 2,332
Real Estate [Member] | Substandard [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 2,302 | 1,089
Commercial and Industrial Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans | [1] | 90,957 | 85,779
Commercial and Industrial Loans [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans | [1] | 90,957 | 85,779
Commercial and Industrial Loans [Member] | Pass [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 88,463 | 83,261
Commercial and Industrial Loans [Member] | Special Mention [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 714 | 1,977
Commercial and Industrial Loans [Member] | Substandard [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 1,780 | 541
Consumer Portfolio Segment [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 7,816 | 6,927
Consumer Portfolio Segment [Member] | Consumer Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 38,040 | 38,583
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 7,816 | 6,927
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 30,224 | 31,656
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member] | Performing Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 29,693 | 30,826
Consumer Portfolio Segment [Member] | Consumer Loans [Member] | ALC [Member] | Nonperforming Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 531 | 830
Consumer Portfolio Segment [Member] | Branch Retail [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 32,305 | 28,324
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 32,305 | 28,324
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Performing Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 32,024 | 28,171
Consumer Portfolio Segment [Member] | Branch Retail [Member] | ALC [Member] | Nonperforming Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 281 | 153
Consumer Portfolio Segment [Member] | Indirect Sales [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 45,503 | 40,609
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 45,503 | 40,609
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] | Performing Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 45,503 | 40,491
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | ALC [Member] | Nonperforming Financial Instruments [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  |  | 118
Consumer Portfolio Segment [Member] | Pass [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | 7,781 | 6,848
Consumer Portfolio Segment [Member] | Substandard [Member] | FUSB [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans |  | $ 35 | $ 79
[1] | Includes equipment financing leases.

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