Note 3 - Revenue by Geographic Region (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
UNITED STATES
Net Sales:
Revenue, Net	[1]	$ 70,740	$ 68,603	$ 241,352	$ 231,743
CANADA
Net Sales:
Revenue, Net	[1]				41
Revenue, Net	[1]	$ 70,740	$ 68,603	$ 241,352	$ 231,784

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