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Note T- Derivative Financial Instruments - Fair Value of Derivative Instruments (Details) - Interest Rate Swap [Member] - Designated as Hedging Instrument [Member] - USD ($)
$ in Thousands
Jun. 30, 2019
Jun. 30, 2018
Accrued Liabilities [Member]    
Derivative Liabilities, Current $ 122
Other Noncurrent Liabilities [Member]    
Derivative Liabilities, Noncurrent $ 544