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Loans and Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Beginning balance |  |  |  | $ 5,055 |  |
Provision |  | $ 883 | $ 789 | 1,998 | $ 2,149 |
Ending balance |  | 5,585 |  | 5,585 |  | $ 5,055
Loans |  | 555,338 |  | 555,338 |  | 525,870
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |  |  |  |
Loans |  | 27,348 |  | 27,348 |  | 41,340
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] |  |  |  |  |  |
Loans |  | 109,336 |  | 109,336 |  | 110,756
Real Estate [Member] | Secured By Multi family Residential Properties [Member] |  |  |  |  |  |
Loans |  | 46,843 |  | 46,843 |  | 23,009
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] |  |  |  |  |  |
Loans |  | 164,941 |  | 164,941 |  | 156,162
Real Estate [Member] | Other Real Estate Loans [Member] |  |  |  |  |  |
Loans |  | 842 |  | 842 |  | 1,308
Commercial and Industrial Loans [Member] |  |  |  |  |  |
Loans | [1] | 90,470 |  | 90,470 |  | 85,779
Consumer Portfolio Segment [Member] | Consumer Loans [Member] |  |  |  |  |  |
Loans |  | 37,477 |  | 37,477 |  | 38,583
Consumer Portfolio Segment [Member] | Branch Retail [Member] |  |  |  |  |  |
Loans |  | 30,008 |  | 30,008 |  | 28,324
Consumer Portfolio Segment [Member] | Indirect Sales [Member] |  |  |  |  |  |
Loans |  | 48,073 |  | 48,073 |  | 40,609
FUSB [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 2,735 | 2,447 | 2,447
Charge-offs |  |  |  | (79) |  | (16)
Recoveries |  |  |  | 58 |  | 89
Provision |  |  |  | 635 |  | 215
Ending balance |  | 3,349 |  | 3,349 |  | 2,735
Individually evaluated for impairment |  | 418 |  | 418 |  | 166
Collectively evaluated for impairment |  | 2,931 |  | 2,931 |  | 2,569
Individually evaluated for impairment |  | 5,255 |  | 5,255 |  | 831
Collectively evaluated for impairment |  | 436,414 |  | 436,414 |  | 416,168
Loans |  | 441,849 |  | 441,849 |  | 417,496
FUSB [Member] | Financial Asset Acquired With Credit Deterioration [Member] |  |  |  |  |  |
Loans |  | 180 |  | 180 |  | 497
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 240 | 203 | 203
Provision |  |  |  | (78) |  | 37
Ending balance |  | 162 |  | 162 |  | 240
Individually evaluated for impairment |  |  |  |  |  | 28
Collectively evaluated for impairment |  | 162 |  | 162 |  | 212
Individually evaluated for impairment |  |  |  |  |  | 153
Collectively evaluated for impairment |  | 27,348 |  | 27,348 |  | 41,114
Loans |  | 27,348 |  | 27,348 |  | 41,340
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 322 | 238 | 238
Charge-offs |  |  |  | (47) |  | (9)
Recoveries |  |  |  | 22 |  | 51
Provision |  |  |  | 139 |  | 42
Ending balance |  | 436 |  | 436 |  | 322
Individually evaluated for impairment |  | 15 |  | 15 |  | 50
Collectively evaluated for impairment |  | 421 |  | 421 |  | 272
Individually evaluated for impairment |  | 702 |  | 702 |  | 57
Collectively evaluated for impairment |  | 102,387 |  | 102,387 |  | 102,490
Loans |  | 103,269 |  | 103,269 |  | 102,971
FUSB [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 128 | 116 | 116
Provision |  |  |  | 233 |  | 12
Ending balance |  | 361 |  | 361 |  | 128
Collectively evaluated for impairment |  | 361 |  | 361 |  | 128
Collectively evaluated for impairment |  | 46,843 |  | 46,843 |  | 23,009
Loans |  | 46,843 |  | 46,843 |  | 23,009
FUSB [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 831 | 777 | 777
Recoveries |  |  |  |  |  | 4
Provision |  |  |  | 72 |  | 50
Ending balance |  | 903 |  | 903 |  | 831
Individually evaluated for impairment |  |  |  |  |  | 1
Collectively evaluated for impairment |  | 903 |  | 903 |  | 830
Individually evaluated for impairment |  | 496 |  | 496 |  | 511
Collectively evaluated for impairment |  | 164,445 |  | 164,445 |  | 155,651
Loans |  | 164,941 |  | 164,941 |  | 156,162
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 1 | 2 | 2
Provision |  |  |  |  |  | (1)
Ending balance |  | 1 |  | 1 |  | 1
Collectively evaluated for impairment |  | 1 |  | 1 |  | 1
Collectively evaluated for impairment |  | 842 |  | 842 |  | 1,308
Loans |  | 842 |  | 842 |  | 1,308
FUSB [Member] | Real Estate [Member] | Financial Asset Acquired With Credit Deterioration [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |  |  |  |
Loans |  |  |  |  |  | 73
FUSB [Member] | Real Estate [Member] | Financial Asset Acquired With Credit Deterioration [Member] | Secured by 1-4 Family Residential Properties [Member] |  |  |  |  |  |
Loans |  | 180 |  | 180 |  | 424
FUSB [Member] | Commercial and Industrial Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 1,138 | 1,049 | 1,049
Charge-offs |  |  |  |  |  | (3)
Recoveries |  |  |  | 3 |  | 11
Provision |  |  |  | 259 |  | 81
Ending balance |  | 1,400 |  | 1,400 |  | 1,138
Individually evaluated for impairment |  | 394 |  | 394 |  | 67
Collectively evaluated for impairment |  | 1,006 |  | 1,006 |  | 1,071
Individually evaluated for impairment |  | 4,025 |  | 4,025 |  | 67
Collectively evaluated for impairment |  | 86,445 |  | 86,445 |  | 85,712
Loans | [1] | 90,470 |  | 90,470 |  | 85,779
FUSB [Member] | Consumer Portfolio Segment [Member] |  |  |  |  |  |
Loans |  | 8,136 |  | 8,136 |  | 6,927
FUSB [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 75 | 62 | 62
Charge-offs |  |  |  | (32) |  | (4)
Recoveries |  |  |  | 33 |  | 23
Provision |  |  |  | 10 |  | (6)
Ending balance |  | 86 |  | 86 |  | 75
Individually evaluated for impairment |  | 9 |  | 9 |  | 20
Collectively evaluated for impairment |  | 77 |  | 77 |  | 55
Individually evaluated for impairment |  | 32 |  | 32 |  | 43
Collectively evaluated for impairment |  | 8,104 |  | 8,104 |  | 6,884
Loans |  | 8,136 |  | 8,136 |  | 6,927
ALC [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 2,320 | 2,327 | 2,327
Charge-offs |  |  |  | (2,023) |  | (3,101)
Recoveries |  |  |  | 576 |  | 687
Provision |  |  |  | 1,363 |  | 2,407
Ending balance |  | 2,236 |  | 2,236 |  | 2,320
Collectively evaluated for impairment |  | 2,236 |  | 2,236 |  | 2,320
Individually evaluated for impairment |  | 137 |  | 137 |  | 211
Collectively evaluated for impairment |  | 113,352 |  | 113,352 |  | 108,163
Loans |  | 113,489 |  | 113,489 |  | 108,374
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 24 | 52 | 52
Charge-offs |  |  |  | (34) |  | (92)
Recoveries |  |  |  | 6 |  | 23
Provision |  |  |  | 29 |  | 41
Ending balance |  | 25 |  | 25 |  | 24
Collectively evaluated for impairment |  | 25 |  | 25 |  | 24
Individually evaluated for impairment |  | 137 |  | 137 |  | 211
Collectively evaluated for impairment |  | 5,930 |  | 5,930 |  | 7,574
Loans |  | 6,067 |  | 6,067 |  | 7,785
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 1,724 | 1,653 | 1,653
Charge-offs |  |  |  | (1,501) |  | (2,478)
Recoveries |  |  |  | 470 |  | 545
Provision |  |  |  | 862 |  | 2,004
Ending balance |  | 1,555 |  | 1,555 |  | 1,724
Collectively evaluated for impairment |  | 1,555 |  | 1,555 |  | 1,724
Collectively evaluated for impairment |  | 29,341 |  | 29,341 |  | 31,656
Loans |  | 29,341 |  | 29,341 |  | 31,656
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 427 | 393 | 393
Charge-offs |  |  |  | (294) |  | (415)
Recoveries |  |  |  | 94 |  | 113
Provision |  |  |  | 204 |  | 336
Ending balance |  | 431 |  | 431 |  | 427
Collectively evaluated for impairment |  | 431 |  | 431 |  | 427
Collectively evaluated for impairment |  | 30,008 |  | 30,008 |  | 28,324
Loans |  | 30,008 |  | 30,008 |  | 28,324
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 145 | 229 | 229
Charge-offs |  |  |  | (194) |  | (116)
Recoveries |  |  |  | 6 |  | 6
Provision |  |  |  | 268 |  | 26
Ending balance |  | 225 |  | 225 |  | 145
Collectively evaluated for impairment |  | 225 |  | 225 |  | 145
Collectively evaluated for impairment |  | 48,073 |  | 48,073 |  | 40,609
Loans |  | 48,073 |  | 48,073 |  | 40,609
FUSB and ALC [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 5,055 | 4,774 | 4,774
Charge-offs |  |  |  | (2,102) |  | (3,117)
Recoveries |  |  |  | 634 |  | 776
Provision |  |  |  | 1,998 |  | 2,622
Ending balance |  | 5,585 |  | 5,585 |  | 5,055
Individually evaluated for impairment |  | 418 |  | 418 |  |
Collectively evaluated for impairment |  | 5,167 |  | 5,167 |  | 4,889
Individually evaluated for impairment |  | 5,392 |  | 5,392 |  | 1,042
Collectively evaluated for impairment |  | 549,766 |  | 549,766 |  | 524,331
Loans |  | 555,338 |  | 555,338 |  | 525,870
FUSB and ALC [Member] | Financial Asset Acquired With Credit Deterioration [Member] |  |  |  |  |  |
Loans |  | 180 |  | 180 |  | 497
FUSB and ALC [Member] | FUSB [Member] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 166
FUSB and ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 240 | 203 | 203
Provision |  |  |  | (78) |  | 37
Ending balance |  | 162 |  | 162 |  | 240
Collectively evaluated for impairment |  | 162 |  | 162 |  | 212
Individually evaluated for impairment |  |  |  |  |  | 153
Collectively evaluated for impairment |  | 27,348 |  | 27,348 |  | 41,114
Loans |  | 27,348 |  | 27,348 |  | 41,340
FUSB and ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 346 | 290 | 290
Charge-offs |  |  |  | (81) |  | (101)
Recoveries |  |  |  | 28 |  | 74
Provision |  |  |  | 168 |  | 83
Ending balance |  | 461 |  | 461 |  | 346
Individually evaluated for impairment |  | 15 |  | 15 |  |
Collectively evaluated for impairment |  | 446 |  | 446 |  | 296
Individually evaluated for impairment |  | 839 |  | 839 |  | 268
Collectively evaluated for impairment |  | 108,317 |  | 108,317 |  | 110,064
Loans |  | 109,336 |  | 109,336 |  | 110,756
FUSB and ALC [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 128 | 116 | 116
Provision |  |  |  | 233 |  | 12
Ending balance |  | 361 |  | 361 |  | 128
Collectively evaluated for impairment |  | 361 |  | 361 |  | 128
Collectively evaluated for impairment |  | 46,843 |  | 46,843 |  | 23,009
Loans |  | 46,843 |  | 46,843 |  | 23,009
FUSB and ALC [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 831 | 777 | 777
Recoveries |  |  |  |  |  | 4
Provision |  |  |  | 72 |  | 50
Ending balance |  | 903 |  | 903 |  | 831
Collectively evaluated for impairment |  | 903 |  | 903 |  | 830
Individually evaluated for impairment |  | 496 |  | 496 |  | 511
Collectively evaluated for impairment |  | 164,445 |  | 164,445 |  | 155,651
Loans |  | 164,941 |  | 164,941 |  | 156,162
FUSB and ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 1 | 2 | 2
Provision |  |  |  |  |  | (1)
Ending balance |  | 1 |  | 1 |  | 1
Collectively evaluated for impairment |  | 1 |  | 1 |  | 1
Collectively evaluated for impairment |  | 842 |  | 842 |  | 1,308
Loans |  | 842 |  | 842 |  | 1,308
FUSB and ALC [Member] | Real Estate [Member] | Financial Asset Acquired With Credit Deterioration [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |  |  |  |
Loans |  |  |  |  |  | 73
FUSB and ALC [Member] | Real Estate [Member] | Financial Asset Acquired With Credit Deterioration [Member] | Secured by 1-4 Family Residential Properties [Member] |  |  |  |  |  |
Loans |  | 180 |  | 180 |  | 424
FUSB and ALC [Member] | Real Estate [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 28
FUSB and ALC [Member] | Real Estate [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 50
FUSB and ALC [Member] | Real Estate [Member] | FUSB [Member] | Secured By Non-farm Non residential Properties [Member] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 1
FUSB and ALC [Member] | Commercial and Industrial Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 1,138 | 1,049 | 1,049
Charge-offs |  |  |  |  |  | (3)
Recoveries |  |  |  | 3 |  | 11
Provision |  |  |  | 259 |  | 81
Ending balance |  | 1,400 |  | 1,400 |  | 1,138
Individually evaluated for impairment |  | 394 |  | 394 |  |
Collectively evaluated for impairment |  | 1,006 |  | 1,006 |  | 1,071
Individually evaluated for impairment |  | 4,025 |  | 4,025 |  | 67
Collectively evaluated for impairment |  | 86,445 |  | 86,445 |  | 85,712
Loans |  | 90,470 |  | 90,470 |  | 85,779
FUSB and ALC [Member] | Commercial and Industrial Loans [Member] | FUSB [Member] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 67
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 1,799 | 1,715 | 1,715
Charge-offs |  |  |  | (1,533) |  | (2,482)
Recoveries |  |  |  | 503 |  | 568
Provision |  |  |  | 872 |  | 1,998
Ending balance |  | 1,641 |  | 1,641 |  | 1,799
Individually evaluated for impairment |  | 9 |  | 9 |  |
Collectively evaluated for impairment |  | 1,632 |  | 1,632 |  | 1,779
Individually evaluated for impairment |  | 32 |  | 32 |  | 43
Collectively evaluated for impairment |  | 37,445 |  | 37,445 |  | 38,540
Loans |  | 37,477 |  | 37,477 |  | 38,583
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 427 | 393 | 393
Charge-offs |  |  |  | (294) |  | (415)
Recoveries |  |  |  | 94 |  | 113
Provision |  |  |  | 204 |  | 336
Ending balance |  | 431 |  | 431 |  | 427
Collectively evaluated for impairment |  | 431 |  | 431 |  | 427
Collectively evaluated for impairment |  | 30,008 |  | 30,008 |  | 28,324
Loans |  | 30,008 |  | 30,008 |  | 28,324
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] |  |  |  |  |  |
Beginning balance |  |  |  | 145 | $ 229 | 229
Charge-offs |  |  |  | (194) |  | (116)
Recoveries |  |  |  | 6 |  | 6
Provision |  |  |  | 268 |  | 26
Ending balance |  | 225 |  | 225 |  | 145
Collectively evaluated for impairment |  | 225 |  | 225 |  | 145
Collectively evaluated for impairment |  | 48,073 |  | 48,073 |  | 40,609
Loans |  | $ 48,073 |  | $ 48,073 |  | 40,609
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | FUSB [Member] | Consumer Loans [Member] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | $ 20
[1] | Includes equipment financing leases.

X
- Definition Provision reduction in reserve for loan losses. + References No definition available. + Details
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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