Note 17 - Summary of Quarterly Results (Unaudited) - Statement of Operations Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended												12 Months Ended
		Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	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, 2016		Jun. 30, 2015		Jun. 30, 2014		Jun. 30, 2013	Jun. 30, 2012
Net sales		$ 80,844	$ 70,740	$ 84,687	$ 85,925	$ 76,073	$ 68,603	$ 84,715	$ 78,466	$ 73,858	$ 68,996	$ 76,123	$ 80,486	$ 322,196	[1]	$ 307,857	[1]	$ 299,463	[1]	$ 280,790	$ 268,402
Cost of products and services sold														238,525		233,408		234,165		220,380	208,089
Loss on sale of subsidiary (see Note 15)																565
Gain on disposition of building																(343)
Selling and administrative expenses														69,715		66,694		62,175		57,367	53,724
Goodwill and intangible asset impairment	[2]																	805		2,413	258
Operating income														13,956		7,533		2,318		630	6,331
Interest (income)														(84)		(26)		(17)		(47)	(25)
Interest expense														36		45		68		62	165
Income before income taxes														14,004		7,514		2,267		615	6,191
Income tax expense														4,522		2,363		1,337		738	2,967
Net income		$ 1,428	$ 522	$ 3,782	$ 3,750	$ 1,643	$ 393	$ 1,588	$ 1,527	$ (796)	$ (1,009)	$ 870	$ 1,865	$ 9,482		$ 5,151		$ 930		$ (123)	$ 3,224
Basic (in dollars per share)		$ 0.06	$ 0.02	$ 0.15	$ 0.15	$ 0.07	$ 0.02	$ 0.06	$ 0.06	$ (0.03)	$ (0.04)	$ 0.04	$ 0.08	$ 0.38		$ 0.21		$ 0.04		$ (0.01)	$ 0.13
Diluted (in dollars per share)		$ 0.06	$ 0.02	$ 0.15	$ 0.15	$ 0.07	$ 0.02	$ 0.06	$ 0.06	$ (0.03)	$ (0.04)	$ 0.04	$ 0.08	0.37		0.21		0.04		(0.01)	0.13
Dividends, per share (in dollars per share)														$ 0.17		$ 0.12		$ 0.24		$ 0.36	$ 0.23
Basic (in shares)														24,988		24,496		24,388		24,313	24,298
Diluted (in shares)														25,592	[3]	24,638	[3]	24,546	[3]	24,313	24,352
Working capital		$ 88,510				$ 80,813				$ 74,349				$ 88,510		$ 80,813		$ 74,349		$ 74,647	$ 81,834
Total assets		195,560				180,690				168,688				195,560		180,690		168,688		169,179	175,226
Long-term debt, including current maturities
Shareholders’ equity		$ 155,520				$ 142,952				$ 138,412				$ 155,520		$ 142,952		$ 138,412		$ 141,690	$ 149,368

[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 1,275,000 common shares, 1,882,722 common shares, and 1,974,775 common shares at June 30, 2016, 2015, and 2014, 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.