Note 17 - Quarterly Financial Data (Unaudited) (Details) - Quarterly Financial Data (USD $) In Thousands, except Per Share data, 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, 2014	Jun. 30, 2013	Jun. 30, 2012
Quarterly Financial Data [Abstract]
Net Sales	$ 69,525	$ 58,281	$ 61,841	$ 57,487	$ 67,167	$ 59,864	$ 59,829	$ 56,937	$ 247,134	$ 243,797	$ 260,148
Gross Margin	23,683	19,259	20,345	17,809	19,431	15,939	18,753	17,689	81,096	71,812	78,075
Earnings (Loss) Before Income Taxes	5,604	2,667	2,941	845	1,649	(1,236)	1,121	(738)	12,057	796	111
Net Earnings / (Loss)	$ 3,032	$ 1,682	$ 1,782	$ 216	$ 1,198	$ (1,485)	$ 476	$ (351)	$ 6,712	$ (162)	$ 888
Basic and Diluted Earnings / (Loss) Per Share (in Dollars per share)	$ 0.44	$ 0.24	$ 0.26	$ 0.03	$ 0.18	$ (0.22)	$ 0.07	$ (0.05)	$ 0.97	$ (0.02)