Note G - Economic Dependency - Substantial Net Purchase From Certain Suppliers (Details) - Supplier Concentration Risk [Member] - Raw Material Purchases [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Raw Material Purchases by Supplier	$ 6,412	$ 1,734	$ 9,787	$ 3,227
Supplier 1 [Member]
Raw Material Purchases by Supplier	$ 6,412	$ 1,734	$ 9,787	$ 3,227