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Segment Reporting - Results for Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |
Total interest income | $ 10,825 | $ 11,027 | $ 10,923 | $ 10,813 | $ 11,177 | $ 9,452 | $ 8,390 | $ 8,119 | $ 43,588 | $ 37,138
Total interest expense | 1,636 | 1,680 | 1,690 | 1,640 | 1,533 | 1,124 | 888 | 805 | 6,646 | 4,350
Net interest income | 9,189 | 9,347 | 9,233 | 9,173 | 9,644 | 8,328 | 7,502 | 7,314 | 36,942 | 32,788
Provision |  |  |  |  |  |  |  |  | 2,714 | 2,622
Net interest income after provision for loan and lease losses | 8,473 | 8,464 | 8,518 | 8,773 | 9,171 | 7,539 | 6,800 | 6,656 | 34,228 | 30,166
Total non-interest income | 1,396 | 1,414 | 1,291 | 1,265 | 1,226 | 2,112 | 1,132 | 1,140 | 5,366 | 5,610
Total non-interest expense | 8,279 | 8,546 | 8,504 | 8,453 | 8,450 | 9,142 | 7,492 | 7,301 | 33,782 | 32,385
Income before income taxes |  |  |  |  |  |  |  |  | 5,812 | 3,391
Provision for income taxes | 381 | 214 | 300 | 351 | 470 | 269 | 81 | 81 | 1,246 | 901
Net income (loss) | 1,209 | $ 1,118 | $ 1,005 | $ 1,234 | 1,477 | $ 240 | $ 359 | $ 414 | 4,566 | 2,490
Total assets | 788,738 |  |  |  | 791,939 |  |  |  | 788,738 | 791,939
Total investment securities | 108,356 |  |  |  | 153,949 |  |  |  | 108,356 | 153,949
Total loans, net | 545,243 |  |  |  | 514,867 |  |  |  | 545,243 | 514,867
Goodwill and core deposit intangible, net | 8,825 |  |  |  | 9,312 |  |  |  | 8,825 | 9,312
Investment in subsidiaries |  |  |  |  | 5 |  |  |  |  | 5
Fixed asset additions |  |  |  |  |  |  |  |  | 3,184 | 1,549
Depreciation and amortization expense |  |  |  |  |  |  |  |  | 1,609 | 1,455
Total interest income from external customers |  |  |  |  |  |  |  |  | 43,588 | 37,138
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |
Total interest income |  |  |  |  |  |  |  |  | (5,078) | (4,663)
Total interest expense |  |  |  |  |  |  |  |  | (5,078) | (4,663)
Total non-interest income |  |  |  |  |  |  |  |  | (6,141) | (4,170)
Total non-interest expense |  |  |  |  |  |  |  |  | (651) | (852)
Income before income taxes |  |  |  |  |  |  |  |  | (5,490) | (3,318)
Net income (loss) |  |  |  |  |  |  |  |  | (5,490) | (3,318)
Total assets | (201,467) |  |  |  | (189,795) |  |  |  | (201,467) | (189,795)
Total loans, net | (95,768) |  |  |  | (91,116) |  |  |  | (95,768) | (91,116)
Investment in subsidiaries | (84,186) |  |  |  | (79,191) |  |  |  | (84,186) | (79,191)
Total interest income from affiliates |  |  |  |  |  |  |  |  | (5,078) | (4,663)
FUSB [Member] |  |  |  |  |  |  |  |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |
Provision |  |  |  |  |  |  |  |  | 788 | 215
Total loans, net | 438,710 |  |  |  | 414,430 |  |  |  | 438,710 | 414,430
FUSB [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |
Total interest income |  |  |  |  |  |  |  |  | 30,921 | 24,080
Total interest expense |  |  |  |  |  |  |  |  | 6,670 | 4,367
Net interest income |  |  |  |  |  |  |  |  | 24,251 | 19,713
Provision |  |  |  |  |  |  |  |  | 788 | 215
Net interest income after provision for loan and lease losses |  |  |  |  |  |  |  |  | 23,463 | 19,498
Total non-interest income |  |  |  |  |  |  |  |  | 4,559 | 4,746
Total non-interest expense |  |  |  |  |  |  |  |  | 23,065 | 21,859
Income before income taxes |  |  |  |  |  |  |  |  | 4,957 | 2,385
Provision for income taxes |  |  |  |  |  |  |  |  | 977 | 704
Net income (loss) |  |  |  |  |  |  |  |  | 3,980 | 1,681
Total assets | 789,620 |  |  |  | 793,530 |  |  |  | 789,620 | 793,530
Total investment securities | 108,276 |  |  |  | 153,871 |  |  |  | 108,276 | 153,871
Total loans, net | 534,478 |  |  |  | 505,546 |  |  |  | 534,478 | 505,546
Goodwill and core deposit intangible, net | 8,825 |  |  |  | 9,312 |  |  |  | 8,825 | 9,312
Investment in subsidiaries |  |  |  |  | 5 |  |  |  |  | 5
Fixed asset additions |  |  |  |  |  |  |  |  | 2,948 | 1,388
Depreciation and amortization expense |  |  |  |  |  |  |  |  | 1,464 | 1,311
Total interest income from external customers |  |  |  |  |  |  |  |  | 25,867 | 19,434
Total interest income from affiliates |  |  |  |  |  |  |  |  | 5,054 | 4,646
ALC [Member] |  |  |  |  |  |  |  |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |
Provision |  |  |  |  |  |  |  |  | 1,926 | 2,407
Total loans, net | 106,533 |  |  |  | 100,437 |  |  |  | 106,533 | 100,437
ALC [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |
Total interest income |  |  |  |  |  |  |  |  | 17,719 | 17,703
Total interest expense |  |  |  |  |  |  |  |  | 5,054 | 4,646
Net interest income |  |  |  |  |  |  |  |  | 12,665 | 13,057
Provision |  |  |  |  |  |  |  |  | 1,926 | 2,407
Net interest income after provision for loan and lease losses |  |  |  |  |  |  |  |  | 10,739 | 10,650
Total non-interest income |  |  |  |  |  |  |  |  | 909 | 1,081
Total non-interest expense |  |  |  |  |  |  |  |  | 9,599 | 9,770
Income before income taxes |  |  |  |  |  |  |  |  | 2,049 | 1,961
Provision for income taxes |  |  |  |  |  |  |  |  | 516 | 430
Net income (loss) |  |  |  |  |  |  |  |  | 1,533 | 1,531
Total assets | 110,374 |  |  |  | 103,067 |  |  |  | 110,374 | 103,067
Total loans, net | 106,533 |  |  |  | 100,437 |  |  |  | 106,533 | 100,437
Fixed asset additions |  |  |  |  |  |  |  |  | 236 | 161
Depreciation and amortization expense |  |  |  |  |  |  |  |  | 145 | 144
Total interest income from external customers |  |  |  |  |  |  |  |  | 17,719 | 17,703
Other Segments [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |
Total interest income |  |  |  |  |  |  |  |  | 26 | 18
Net interest income |  |  |  |  |  |  |  |  | 26 | 18
Net interest income after provision for loan and lease losses |  |  |  |  |  |  |  |  | 26 | 18
Total non-interest income |  |  |  |  |  |  |  |  | 6,039 | 3,953
Total non-interest expense |  |  |  |  |  |  |  |  | 1,769 | 1,608
Income before income taxes |  |  |  |  |  |  |  |  | 4,296 | 2,363
Provision for income taxes |  |  |  |  |  |  |  |  | (247) | (233)
Net income (loss) |  |  |  |  |  |  |  |  | 4,543 | 2,596
Total assets | 90,211 |  |  |  | 85,137 |  |  |  | 90,211 | 85,137
Total investment securities | 80 |  |  |  | 78 |  |  |  | 80 | 78
Investment in subsidiaries | $ 84,186 |  |  |  | $ 79,191 |  |  |  | 84,186 | 79,191
Total interest income from external customers |  |  |  |  |  |  |  |  | 2 | 1
Total interest income from affiliates |  |  |  |  |  |  |  |  | $ 24 | $ 17

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