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Note 14 - Financial Instruments - Components of AOCI of Unrealized Losses on Cash Flow Hedges (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Balance $ (1,361) $ 0
Effective portion of changes in fair value of interest swap contracts 1,361 (1,361)
Termination of interest rate swap contracts 1,361 (1,361)
Balance $ 0 $ (1,361)