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
	Sep. 30, 2021	Sep. 30, 2020
Raw Material Purchases by Supplier	$ 5,428	$ 3,375
Supplier 1 [Member]
Raw Material Purchases by Supplier	3,368	$ 3,375
Supplier 2 [Member]
Raw Material Purchases by Supplier	$ 2,060