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Note 14 - Accumulated Other Comprehensive Income (Loss) - Changes in Each Component of Accumulated Other Comprehensive Income (Loss) (Details) (Parentheticals) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Unrealized holding gains, tax $ 136 $ 369 $ 692 $ 776
Change in fair value of cash flow hedges, tax (6) 0 (6) 0
Unrealized holding losses transferred from held to maturity to available for sale, tax 0 0 0 (91)
AOCI Attributable to Parent [Member]        
Unrealized holding gains, tax 136 $ 369 692 776
Change in fair value of cash flow hedges, tax $ (6)   $ (6)  
Unrealized holding losses transferred from held to maturity to available for sale, tax       $ (91)