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Note 2 - Securities (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Available-for-sale and Held-to-maturity Reconciliation [Table Text Block] |
|  | 2021 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 39,871 |  |  | $ | 37 |  |  | $ | (250 | ) |  | $ | 39,658 |
U.S. agency and mortgage-backed securities |  |  | 177,131 |  |  |  | 1,085 |  |  |  | (1,837 | ) |  |  | 176,379 |
Obligations of states and political subdivisions |  |  | 71,037 |  |  |  | 910 |  |  |  | (509 | ) |  |  | 71,438 |
Corporate debt securities |  |  | 2,019 |  |  |  | 1 |  |  |  | — |  |  |  | 2,020 |
Total securities available for sale |  | $ | 290,058 |  |  | $ | 2,033 |  |  | $ | (2,596 | ) |  | $ | 289,495 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 26,392 |  |  | $ | 124 |  |  | $ | (53 | ) |  | $ | 26,463 |
Obligations of states and political subdivisions |  |  | 7,049 |  |  |  | 118 |  |  |  | (13 | ) |  |  | 7,154 |
Total securities held to maturity |  | $ | 33,441 |  |  | $ | 242 |  |  | $ | (66 | ) |  | $ | 33,617 |
Total securities |  | $ | 323,499 |  |  | $ | 2,275 |  |  | $ | (2,662 | ) |  | $ | 323,112 |
|  | 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 |
Schedule of Temporary Impairment Losses, Investments [Table Text Block] |
|  | 2021 |
|  | 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. Treasury securities |  | $ | 29,656 |  |  | $ | (250 | ) |  | $ | — |  |  | $ | — |  |  | $ | 29,656 |  |  | $ | (250 | )
U.S. agency and mortgage-backed securities |  |  | 109,950 |  |  |  | (1,335 | ) |  |  | 14,749 |  |  |  | (502 | ) |  |  | 124,699 |  |  |  | (1,837 | )
Obligations of states and political subdivisions |  |  | 34,611 |  |  |  | (500 | ) |  |  | 1,009 |  |  |  | (9 | ) |  |  | 35,620 |  |  |  | (509 | )
Total securities available for sale |  | $ | 174,217 |  |  | $ | (2,085 | ) |  | $ | 15,758 |  |  | $ | (511 | ) |  | $ | 189,975 |  |  | $ | (2,596 | )
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 5,411 |  |  | $ | (53 | ) |  | $ | — |  |  | $ | — |  |  | $ | 5,411 |  |  | $ | (53 | )
Obligations of states and political subdivisions |  |  | 999 |  |  |  | (13 | ) |  |  | — |  |  |  | — |  |  |  | 999 |  |  |  | (13 | )
Total securities held to maturity |  | $ | 6,410 |  |  | $ | (66 | ) |  | $ | — |  |  | $ | — |  |  | $ | 6,410 |  |  | $ | (66 | )
Total securities |  | $ | 180,627 |  |  | $ | (2,151 | ) |  | $ | 15,758 |  |  | $ | (511 | ) |  | $ | 196,385 |  |  | $ | (2,662 | )
|  | 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 | )
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 |  | $ | 765 |  |  | $ | 766 |  |  | $ | 2,410 |  |  | $ | 2,412 |
Due after one year through five years |  |  | 37,128 |  |  |  | 37,119 |  |  |  | 2,332 |  |  |  | 2,415 |
Due after five years through ten years |  |  | 65,837 |  |  |  | 66,087 |  |  |  | 6,288 |  |  |  | 6,362 |
Due after ten years |  |  | 186,328 |  |  |  | 185,523 |  |  |  | 22,411 |  |  |  | 22,428 |
|  | $ | 290,058 |  |  | $ | 289,495 |  |  | $ | 33,441 |  |  | $ | 33,617 |
Marketable Securities [Table Text Block] |
|  | 2021 |  |  | 2020 |
Federal Home Loan Bank stock |  | $ | 701 |  |  | $ | 818 |
Federal Reserve Bank stock |  |  | 980 |  |  |  | 980 |
Community Bankers’ Bank stock |  |  | 132 |  |  |  | 77 |
|  | $ | 1,813 |  |  | $ | 1,875 |

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