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Note 2 - Securities (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Available-for-sale and Held-to-maturity Reconciliation [Table Text Block] |
|  | 2020 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 98,848 |  |  | $ | 2,830 |  |  | $ | (80 | ) |  | $ | 101,598 |
Obligations of states and political subdivisions |  |  | 37,507 |  |  |  | 1,122 |  |  |  | (2 | ) |  |  | 38,627 |
Total securities available for sale |  | $ | 136,355 |  |  | $ | 3,952 |  |  | $ | (82 | ) |  | $ | 140,225 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 9,588 |  |  | $ | 264 |  |  | $ | — |  |  | $ | 9,852 |
Obligations of states and political subdivisions |  |  | 3,146 |  |  |  | 140 |  |  |  | — |  |  |  | 3,286 |
Corporate debt securities |  |  | 1,500 |  |  |  | 105 |  |  |  | — |  |  |  | 1,605 |
Total securities held to maturity |  | $ | 14,234 |  |  | $ | 509 |  |  | $ | — |  |  | $ | 14,743 |
Total securities |  | $ | 150,589 |  |  | $ | 4,461 |  |  | $ | (82 | ) |  | $ | 154,968 |
|  | 2019 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 94,461 |  |  | $ | 778 |  |  | $ | (334 | ) |  | $ | 94,905 |
Obligations of states and political subdivisions |  |  | 25,607 |  |  |  | 476 |  |  |  | (5 | ) |  |  | 26,078 |
Total securities available for sale |  | $ | 120,068 |  |  | $ | 1,254 |  |  | $ | (339 | ) |  | $ | 120,983 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 12,528 |  |  | $ | 6 |  |  | $ | (80 | ) |  | $ | 12,454 |
Obligations of states and political subdivisions |  |  | 3,599 |  |  |  | 81 |  |  |  | — |  |  |  | 3,680 |
Corporate debt securities |  |  | 1,500 |  |  |  | 12 |  |  |  | — |  |  |  | 1,512 |
Total securities held to maturity |  | $ | 17,627 |  |  | $ | 99 |  |  | $ | (80 | ) |  | $ | 17,646 |
Total securities |  | $ | 137,695 |  |  | $ | 1,353 |  |  | $ | (419 | ) |  | $ | 138,629 |
Schedule of Temporary Impairment Losses, Investments [Table Text Block] |
|  | 2020 |
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
|  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 17,367 |  |  | $ | (80 | ) |  | $ | — |  |  | $ | — |  |  | $ | 17,367 |  |  | $ | (80 | )
Obligations of states and political subdivisions |  |  | 1,020 |  |  |  | (2 | ) |  |  | — |  |  |  | — |  |  |  | 1,020 |  |  |  | (2 | )
Total securities available for sale |  | $ | 18,387 |  |  | $ | (82 | ) |  | $ | — |  |  | $ | — |  |  | $ | 18,387 |  |  | $ | (82 | )
|  | 2019 |
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
|  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 29,853 |  |  | $ | (207 | ) |  | $ | 13,083 |  |  | $ | (127 | ) |  | $ | 42,936 |  |  | $ | (334 | )
Obligations of states and political subdivisions |  |  | 1,373 |  |  |  | (5 | ) |  |  | — |  |  |  | — |  |  |  | 1,373 |  |  |  | (5 | )
Total securities available for sale |  | $ | 31,226 |  |  | $ | (212 | ) |  | $ | 13,083 |  |  | $ | (127 | ) |  | $ | 44,309 |  |  | $ | (339 | )
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 3,516 |  |  | $ | (10 | ) |  | $ | 5,936 |  |  | $ | (70 | ) |  | $ | 9,452 |  |  | $ | (80 | )
Total securities held to maturity |  | $ | 3,516 |  |  | $ | (10 | ) |  | $ | 5,936 |  |  | $ | (70 | ) |  | $ | 9,452 |  |  | $ | (80 | )
Total securities |  | $ | 34,742 |  |  | $ | (222 | ) |  | $ | 19,019 |  |  | $ | (197 | ) |  | $ | 53,761 |  |  | $ | (419 | )
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Available for Sale |  |  | Held to Maturity |
|  | Amortized Cost |  |  | Fair Value |  |  | Amortized Cost |  |  | Fair Value |
Due within one year |  | $ | 201 |  |  | $ | 202 |  |  | $ | 392 |  |  | $ | 394 |
Due after one year through five years |  |  | 13,608 |  |  |  | 14,152 |  |  |  | 6,043 |  |  |  | 6,293 |
Due after five years through ten years |  |  | 38,483 |  |  |  | 39,790 |  |  |  | 2,287 |  |  |  | 2,377 |
Due after ten years |  |  | 84,063 |  |  |  | 86,081 |  |  |  | 5,512 |  |  |  | 5,679 |
|  | $ | 136,355 |  |  | $ | 140,225 |  |  | $ | 14,234 |  |  | $ | 14,743 |
Marketable Securities [Table Text Block] |
|  | 2020 |  |  | 2019 |
Federal Home Loan Bank stock |  | $ | 818 |  |  | $ | 776 |
Federal Reserve Bank stock |  |  | 980 |  |  |  | 980 |
Community Bankers’ Bank stock |  |  | 77 |  |  |  | 50 |
|  | $ | 1,875 |  |  | $ | 1,806 |

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