Note 2- Business Segment Information (Details) - Revenue by Geographic Region (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011	Jun. 30, 2010
Net Sales (a):
Net Sales	$ 73,858	$ 68,996	$ 76,123	$ 80,486	$ 68,837	$ 66,152	$ 71,082	$ 74,719	$ 71,196	$ 62,937	$ 68,774	$ 65,495	$ 299,463	[1]	$ 280,790	[1]	$ 268,402	[1]	$ 293,501	$ 254,402
UNITED STATES
Net Sales (a):
Net Sales													298,089	[1]	279,818	[1]	266,590	[1]
CANADA
Net Sales (a):
Net Sales													$ 1,374	[1]	$ 972	[1]	$ 1,812	[1]

[1] Net sales are attributed to geographic areas based upon the location of the operation making the sale.