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Note 6 - Accumulated Other Comprehensive Loss (Details Textual) - Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Other Comprehensive Income (Loss), before Reclassifications, before Tax $ 27,462 $ (19,111)
Other Comprehensive Income (Loss) before Reclassifications, Tax, Total $ (6,933) $ 4,826