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Note T - Derivative Financial Intruments (Details Textual)
xbrli-pure in Thousands
12 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Total $ (509,000) $ 0
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months $ (122,000)  
Foreign Exchange Forward [Member]    
Derivative, Number of Instruments Held, Total 0 0