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Note 10 - Derivative Financial Instruments - Details About Accumulated Other Comprehensive Income (Loss) Components (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Accumulated other comprehensive income (loss) component $ 739 $ 534 $ 1,823 $ 1,121
Interest Rate Swap [Member] | Interest Expense [Member] | Cash Flow Hedging [Member]        
Accumulated other comprehensive income (loss) component 602 572 1,204 1,128
Foreign Exchange Contract [Member] | Other Nonoperating Income (Expense) [Member] | Cash Flow Hedging [Member]        
Accumulated other comprehensive income (loss) component $ 137 $ (38) $ 619 $ (7)