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Note 6 - Accumulated Other Comprehensive Loss (Details Textual) - Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Other Comprehensive Income (Loss), before Reclassifications, before Tax $ (4,811) $ (9,531) $ (25,965) $ (16,455)
Other Comprehensive Income (Loss) before Reclassifications, Tax, Total $ 1,215 $ 2,478 $ 6,556 $ 4,278