Note 17 - Summary of Quarterly Results (Unaudited) (Details) - Statement of Operations Data - USD ($) $ / shares in Units, shares in Thousands, $ 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, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2015		Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2011
Statement of Operations Data [Abstract]
Net sales		$ 76,073	$ 68,603	$ 84,715	$ 78,466	$ 73,858	$ 68,996	$ 76,123	$ 80,486	$ 68,837	$ 66,152	$ 71,082	$ 74,719	$ 307,857	[1]	$ 299,463	[1]	$ 280,790	[1]	$ 268,402	$ 293,501
Cost of products and services sold														233,408		234,165		220,380		208,089	221,156
Loss on sale of a subsidiary														565
Gain on sale of a building														(343)
Selling and administrative expenses														$ 66,694		62,175		57,367		53,724	$ 56,041
Goodwill and intangible asset impairment (a)	[2]															805		2,413		258
Operating income (loss)														$ 7,533		2,318		630		6,331	$ 16,304
Interest (income)														(26)		(17)		(47)		(25)	(43)
Interest expense														45		68		62		165	180
Income (loss) before income taxes														7,514		2,267		615		6,191	16,167
Income taxes														2,363		1,337		738		2,967	5,339
Net income (loss)		$ 1,643	$ 393	$ 1,588	$ 1,527	$ (796)	$ (1,009)	$ 870	$ 1,865	$ 812	$ (315)	$ (2,450)	$ 1,830	$ 5,151		$ 930		$ (123)		$ 3,224	$ 10,828
Earnings (loss) per common share
Basic (in Dollars per share)		$ 0.07	$ 0.02	$ 0.06	$ 0.06	$ (0.03)	$ (0.04)	$ 0.04	$ 0.08	$ 0.03	$ (0.01)	$ (0.10)	$ 0.08	$ 0.21		$ 0.04		$ (0.01)		$ 0.13	$ 0.45
Diluted (in Dollars per share)		$ 0.07	$ 0.02	$ 0.06	$ 0.06	$ (0.03)	$ (0.04)	$ 0.04	$ 0.08	$ 0.03	$ (0.01)	$ (0.10)	$ 0.08	0.21		0.04		(0.01)		0.13	0.44
Cash dividends paid per share (in Dollars per share)														$ 0.12		$ 0.24		$ 0.36		$ 0.23	$ 0.20
Weighted average common shares
Basic (in Shares)														24,496		24,388		24,313		24,298	24,287
Diluted (in Shares)														24,638	[3]	24,546	[3]	24,313	[3]	24,352	24,339
Working capital		$ 83,967				$ 76,788				$ 76,703				$ 83,967		$ 76,788		$ 76,703		$ 83,702	$ 84,524
Total assets		182,379				169,888				169,179				182,379		169,888		169,179		175,226	176,021
Long-term debt, including current maturities																					1,099
Shareholders’ equity		$ 142,952				$ 138,412				$ 141,690				$ 142,952		$ 138,412		$ 141,690		$ 149,368	$ 151,218

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

[2] The Company recorded a significant impairment of goodwill and/or intangible assets in fiscal 2014 and 2013, and a minor impairment in fiscal 2012. See Note 6.

[3] Options to purchase 1,882,722 common shares, 1,974,775 common shares, and 2,027,450 common shares at June 30, 2015, 2014, and 2013, respectively, were not included in the computation of diluted earnings per share because the exercise price was greater than the average fair market value of the common shares.