Note 16 - Quarterly Financial Data (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014
Net Sales	$ 61,441	$ 56,116	$ 63,821	$ 60,172	$ 69,525	$ 58,281	$ 61,841	$ 57,487	$ 241,550	$ 247,134
Gross Margin	16,694	18,694	22,164	19,143	23,683	19,259	20,345	17,809	76,695	81,096
Earnings Before Income Taxes	370	3,508	4,323	1,741	5,604	2,667	2,941	845	9,942	12,057
Net Earnings / (Loss)	$ (563)	$ 2,437	$ 2,447	$ 923	$ 3,032	$ 1,682	$ 1,782	$ 216	$ 5,244	$ 6,712
Basic and Diluted Earnings / (Loss) Per Share (in dollars per share)	$ (0.08)	$ 0.35	$ 0.35	$ 0.13	$ 0.44	$ 0.24	$ 0.26	$ 0.03	$ 0.75	$ 0.97