Note G - Economic Dependency - Substantial Net Purchase from Certain Supplier (Details) - Raw Material Purchases [Member] - Supplier Concentration Risk [Member] - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2015		Sep. 30, 2014
Supplier 1 [Member]
Raw material purchases by supplier	$ 3,051			[1]
% of total raw material purchases	20.00%			[1]
Supplier 2 [Member]
Raw material purchases by supplier		[1]	$ 1,034
% of total raw material purchases		[1]	11.00%
Supplier 3 [Member]
Raw material purchases by supplier		[1]	$ 918
% of total raw material purchases		[1]	10.00%
Raw material purchases by supplier	$ 3,051		$ 1,952
% of total raw material purchases	20.00%		21.00%

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