Note G - Economic Dependency - Substantial Net Purchase from Certain Supplier (Details) - Supplier Concentration Risk [Member] - Raw Material Purchases [Member] - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2016	[1]	Mar. 31, 2015	Mar. 31, 2016	[1]	Mar. 31, 2015	[1]
Supplier 1 [Member]
Raw Materials Purchases by Supplier			$ 810
% of Total Raw Material Purchases			12.00%
Raw Materials Purchases by Supplier			$ 810
% of Total Raw Material Purchases			12.00%

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