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Note 14 - Accumulated Other Comprehensive Loss - Changes in Each Component of Accumulated Other Comprehensive Loss (Details) (Parentheticals) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Unrealized holding losses, tax | $ 369 | $ 75 | $ 776 | $ (304)
Pension liability adjustment, tax | 0 | 0 | 0 | 27
Unrealized holding losses transferred from held to maturity to available for sale, tax | $ 0 | $ 0 | (91) | 0
AOCI Attributable to Parent [Member] |  |  |  |
Unrealized holding losses, tax |  |  | 776 | (304)
Pension liability adjustment, tax |  |  |  | $ (27)
Unrealized holding losses transferred from held to maturity to available for sale, tax |  |  | $ (91) |

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