Note F - Economic Dependency - Substantial Net Purchase From Certain Supplier (Details) - Supplier Concentration Risk [Member] - Raw Material Purchases [Member] - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2016		Dec. 31, 2015
Raw Material Purchases by Supplier			$ 1,395				$ 3,097
% of Total Raw Material Purchases			12.00%				12.00%
Supplier 1 [Member]
Raw Material Purchases by Supplier		[1]		[1]		[1]	$ 3,097
% of Total Raw Material Purchases							12.00%
Supplier 2 [Member]
Raw Material Purchases by Supplier		[1]	$ 1,395			[1]		[1]
% of Total Raw Material Purchases			12.00%

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