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Note 16 - Components of Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Net Unrealized Gain (Loss) on Securities |  |  | Adjustments Related to Pension Benefits |  |  | Accumulated Other Comprehensive Income (Loss) |
Balance at December 31, 201 7 |  | $ | (3,704 | ) |  | $ | (5,991 | ) |  | $ | (9,695 | )
Unrealized holding loss on available for sale securities net of tax of ($595) |  |  | (2,246 | ) |  |  | - |  |  |  | (2,246 | )
Transfer from held to maturity to available for sale securities, net of tax of $237 |  |  | 891 |  |  |  | - |  |  |  | 891 |
Reclassification adjustment, net of tax of ($4) |  |  | (13 | ) |  |  | - |  |  |  | (13 | )
Net pension loss, net of tax of ($249) |  |  | - |  |  |  | (936 | ) |  |  | (936 | )
Less amortization of prior service cost included in net periodic pension cost, net of tax of ($24) |  |  | - |  |  |  | (86 | ) |  |  | (86 | )
Balance at December 31, 201 8 |  | $ | (5,072 | ) |  | $ | (7,013 | ) |  | $ | (12,085 | )
Unrealized holding gain on available for sale securities net of tax of $1,486 |  |  | 5,595 |  |  |  | - |  |  |  | 5,595 |
Reclassification adjustment, net of tax of ($119) |  |  | (447 | ) |  |  | - |  |  |  | (447 | )
Net pension loss, net of tax of ($394) |  |  | - |  |  |  | (1,482 | ) |  |  | (1,482 | )
Less amortization of prior service cost included in net periodic pension cost, net of tax of ($23) |  |  | - |  |  |  | (87 | ) |  |  | (87 | )
Balance at December 31, 201 9 |  | $ | 76 |  |  | $ | (8,582 | ) |  | $ | (8,506 | )
Unrealized holding gain on available for sale securities net of tax of $3,502 |  |  | 13,176 |  |  |  | - |  |  |  | 13,176 |
Reclassification adjustment, net of tax of ($23) |  |  | (85 | ) |  |  | - |  |  |  | (85 | )
Net pension loss, net of tax of ($393) |  |  | - |  |  |  | (1,478 | ) |  |  | (1,478 | )
Less amortization of prior service cost included in net periodic pension cost, net of tax of ($23) |  |  | - |  |  |  | (87 | ) |  |  | (87 | )
Balance at December 31, 2020 |  | $ | 13,167 |  |  | $ | (10,147 | ) |  | $ | 3,020 |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
|  | December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Component of Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |
Reclassification out of unrealized gains on available for sale securities: |  |  |  |  |  |  |  |  |  |  |  |
Realized securities gain, net |  | $ | (108 | ) |  | $ | (566 | ) |  | $ | (17 | )
Income tax benefit |  |  | (23 | ) |  |  | (119 | ) |  |  | (4 | )
Realized gain on available for sale securities, net of tax, reclassified out of accumulated other comprehensive loss |  | $ | (85 | ) |  | $ | (447 | ) |  | $ | (13 | )
Amortization of defined benefit pension items: |  |  |  |  |  |  |  |  |  |  |  |
Prior service costs(1) |  | $ | (110 | ) |  | $ | (110 | ) |  | $ | (110 | )
Income tax benefit |  |  | (23 | ) |  |  | (23 | ) |  |  | (24 | )
Amortization of defined benefit pension items, net of tax, reclassified out of accumulated other comprehensive loss |  | $ | (87 | ) |  | $ | (87 | ) |  | $ | (86 | )

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