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Note H - Segment Information - Assets by Business Segment (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Jun. 30, 2020
Assets $ 118,461 $ 120,203
Private Label Contract Manufacturing [Member]    
Assets 95,502 100,094
Patent and Trademark Licensing [Member]    
Assets $ 22,959 $ 20,109