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Note 2 - Securities (Tables) | 9 Months Ended
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Sep. 30, 2019
Notes Tables |
Schedule of Available-for-sale and Held-to-maturity Reconciliation [Table Text Block] |
|  | September 30, 2019 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 87,004 |  |  | $ | 1,112 |  |  | $ | (184 | ) |  | $ | 87,932 |
Obligations of states and political subdivisions |  |  | 26,118 |  |  |  | 519 |  |  |  | (1 | ) |  |  | 26,636 |
Total securities available for sale |  | $ | 113,122 |  |  | $ | 1,631 |  |  | $ | (185 | ) |  | $ | 114,568 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 13,119 |  |  | $ | 21 |  |  | $ | (71 | ) |  | $ | 13,069 |
Obligations of states and political subdivisions |  |  | 3,603 |  |  |  | 67 |  |  |  | — |  |  |  | 3,670 |
Corporate debt securities |  |  | 1,500 |  |  |  | 20 |  |  |  | — |  |  |  | 1,520 |
Total securities held to maturity |  | $ | 18,222 |  |  | $ | 108 |  |  | $ | (71 | ) |  | $ | 18,259 |
Total securities |  | $ | 131,344 |  |  | $ | 1,739 |  |  | $ | (256 | ) |  | $ | 132,827 |
|  | December 31, 2018 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 86,944 |  |  | $ | 44 |  |  | $ | (2,066 | ) |  | $ | 84,922 |
Obligations of states and political subdivisions |  |  | 15,203 |  |  |  | 31 |  |  |  | (299 | ) |  |  | 14,935 |
Total securities available for sale |  | $ | 102,147 |  |  | $ | 75 |  |  | $ | (2,365 | ) |  | $ | 99,857 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 27,420 |  |  | $ | — |  |  | $ | (869 | ) |  | $ | 26,551 |
Obligations of states and political subdivisions |  |  | 14,488 |  |  |  | 20 |  |  |  | (174 | ) |  |  | 14,334 |
Corporate debt securities |  |  | 1,500 |  |  |  | 9 |  |  |  | — |  |  |  | 1,509 |
Total securities held to maturity |  | $ | 43,408 |  |  | $ | 29 |  |  | $ | (1,043 | ) |  | $ | 42,394 |
Total securities |  | $ | 145,555 |  |  | $ | 104 |  |  | $ | (3,408 | ) |  | $ | 142,251 |
Schedule of Temporary Impairment Losses, Investments [Table Text Block] |
|  | September 30, 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 |  | $ | 13,786 |  |  | $ | (45 | ) |  | $ | 14,185 |  |  | $ | (139 | ) |  | $ | 27,971 |  |  | $ | (184 | )
Obligations of states and political subdivisions |  |  | 230 |  |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | 230 |  |  |  | (1 | )
Total securities available for sale |  | $ | 14,016 |  |  | $ | (46 | ) |  | $ | 14,185 |  |  | $ | (139 | ) |  | $ | 28,201 |  |  | $ | (185 | )
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | — |  |  | $ | — |  |  | $ | 7,692 |  |  | $ | (71 | ) |  | $ | 7,692 |  |  | $ | (71 | )
Total securities held to maturity |  | $ | — |  |  | $ | — |  |  | $ | 7,692 |  |  | $ | (71 | ) |  | $ | 7,692 |  |  | $ | (71 | )
Total securities |  | $ | 14,016 |  |  | $ | (46 | ) |  | $ | 21,877 |  |  | $ | (210 | ) |  | $ | 35,893 |  |  | $ | (256 | )
|  | December 31, 2018 |
|  | 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 |  | $ | 26,350 |  |  | $ | (215 | ) |  | $ | 49,652 |  |  | $ | (1,851 | ) |  | $ | 76,002 |  |  | $ | (2,066 | )
Obligations of states and political subdivisions |  |  | 3,761 |  |  |  | (25 | ) |  |  | 5,127 |  |  |  | (274 | ) |  |  | 8,888 |  |  |  | (299 | )
Total securities available for sale |  | $ | 30,111 |  |  | $ | (240 | ) |  | $ | 54,779 |  |  | $ | (2,125 | ) |  | $ | 84,890 |  |  | $ | (2,365 | )
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | — |  |  | $ | — |  |  | $ | 26,551 |  |  | $ | (869 | ) |  | $ | 26,551 |  |  | $ | (869 | )
Obligations of states and political subdivisions |  |  | 5,326 |  |  |  | (37 | ) |  |  | 6,115 |  |  |  | (137 | ) |  |  | 11,441 |  |  |  | (174 | )
Total securities held to maturity |  | $ | 5,326 |  |  | $ | (37 | ) |  | $ | 32,666 |  |  | $ | (1,006 | ) |  | $ | 37,992 |  |  | $ | (1,043 | )
Total securities |  | $ | 35,437 |  |  | $ | (277 | ) |  | $ | 87,445 |  |  | $ | (3,131 | ) |  | $ | 122,882 |  |  | $ | (3,408 | )
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 |  | $ | 2,034 |  |  | $ | 2,042 |  |  | $ | 437 |  |  | $ | 437 |
Due after one year through five years |  |  | 7,732 |  |  |  | 7,768 |  |  |  | 4,741 |  |  |  | 4,795 |
Due after five years through ten years |  |  | 29,875 |  |  |  | 30,591 |  |  |  | 3,415 |  |  |  | 3,445 |
Due after ten years |  |  | 73,481 |  |  |  | 74,167 |  |  |  | 9,629 |  |  |  | 9,582 |
|  | $ | 113,122 |  |  | $ | 114,568 |  |  | $ | 18,222 |  |  | $ | 18,259 |
Marketable Securities [Table Text Block] |
|  | September 30, 2019 |  |  | December 31, 2018 |
Federal Home Loan Bank stock |  | $ | 776 |  |  | $ | 763 |
Federal Reserve Bank stock |  |  | 980 |  |  |  | 875 |
Community Bankers’ Bank stock |  |  | 50 |  |  |  | 50 |
|  | $ | 1,806 |  |  | $ | 1,688 |

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