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Note 10 - Derivative Financial Instruments - Gain (Loss) Recognized in Comprehensive Income on Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Change in unrealized gains (losses) $ 1,919 $ 356 $ 2,062 $ (215)
Interest Rate Swap [Member]        
Change in unrealized gains (losses) 1,901 (24) 1,840 (481)
Foreign Exchange Contract [Member]        
Change in unrealized gains (losses) $ 18 $ 380 $ 222 $ 266