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				6 Months Ended
	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2015		Dec. 31, 2014
Supplier 1 [Member]
Raw Materials Purchases by Supplier		[1]		[1]	$ 3,097			[1]
% of Total Raw Material Purchases		[1]		[1]	12.00%			[1]
Supplier 2 [Member]
Raw Materials Purchases by Supplier	$ 1,395			[1]		[1]		[1]
% of Total Raw Material Purchases	12.00%			[1]		[1]		[1]
Supplier 3 [Member]
Raw Materials Purchases by Supplier		[1]	$ 792			[1]	$ 1,827
% of Total Raw Material Purchases		[1]	12.00%			[1]	12.00%
Supplier 4 [Member]
Raw Materials Purchases by Supplier		[1]	$ 766			[1]		[1]
% of Total Raw Material Purchases		[1]	11.00%			[1]		[1]
Raw Materials Purchases by Supplier	$ 1,395		$ 1,558		$ 3,097		$ 1,827
% of Total Raw Material Purchases	12.00%		23.00%		12.00%		12.00%

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