Note K - Economic Dependency - Substantial Net Purchase From Certain Suppliers (Details) - Supplier Concentration Risk [Member] - Raw Material Purchases [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Raw Material Purchases by Supplier	$ 23,033	$ 6,356
% of Total Raw Material Purchases	24.00%	10.00%
Supplier 1 [Member]
Raw Material Purchases by Supplier	$ 23,033
% of Total Raw Material Purchases	24.00%		[1]
Supplier 2 [Member]
Raw Material Purchases by Supplier		$ 6,356
% of Total Raw Material Purchases		10.00%

[1] Purchases were less than 10% of the respective period's total raw material purchases.