Note G - Economic Dependency - Substantial Net Purchase from Certain Supplier (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2015		Mar. 31, 2014
Raw material purchases by supplier	$ 810		[1]		[1]		[1]
% of total raw material purchases	12.00%		[1]		[1]		[1]
Supplier 1 [Member] | Raw Material Purchases [Member] | Supplier Concentration Risk [Member]
Raw material purchases by supplier	$ 810		[1]		[1]		[1]
% of total raw material purchases	12.00%		[1]		[1]		[1]

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