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Note 7 - Components of Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2021
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Net Unrealized Gain on Securities |  |  | Adjustments Related to Pension Benefits |  |  | Accumulated Other Comprehensive Income (Loss) |
Balance at December 31, 2019 |  | $ | 76 |  |  | $ | (8,582 | ) |  | $ | (8,506 | )
Unrealized holding gain on available for sale securities, net of tax of $1,028 |  |  | 3,870 |  |  |  | - |  |  |  | 3,870 |
Reclassification adjustment, net of tax of ($4) |  |  | (16 | ) |  |  | - |  |  |  | (16 | )
Balance at March 31, 2020 |  | $ | 3,930 |  |  | $ | (8,582 | ) |  | $ | (4,652 | )
Balance at December 31, 2020 |  | $ | 13,167 |  |  | $ | (10,147 | ) |  | $ | 3,020 |
Unrealized holding loss on available for sale securities, net of tax of ($3,271) |  |  | (12,309 | ) |  |  | - |  |  |  | (12,309 | )
Reclassification adjustment, net of tax of ($1) |  |  | (4 | ) |  |  | - |  |  |  | (4 | )
Balance at March 31, 2021 |  | $ | 854 |  |  | $ | (10,147 | ) |  | $ | (9,293 | )

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