Note 15 - Summary of Quarterly Results (Unaudited) (Details) - Statement of Operations 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, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2010
Statement of Operations Data [Abstract]
Net sales	$ 73,858	$ 68,996	$ 76,123	$ 80,486	$ 68,837	$ 66,152	$ 71,082	$ 74,719	$ 71,196	$ 62,937	$ 68,774	$ 65,495	$ 299,463	[1]	$ 280,790	[1]	$ 268,402	[1]	$ 293,501		$ 254,402
Cost of products and services sold													234,165		220,380		208,089		221,156		198,030
Loss on sale of a subsidiary																					639
Selling and administrative expenses													62,175		57,367		53,724		56,041		53,671
Goodwill and intangible asset impairment (a)													805	[2]	2,413	[2]	258	[2]		[2]	153	[2]
Operating income (loss)													2,318		630		6,331		16,304		1,909
Interest (income)													(17)		(47)		(25)		(43)		(28)
Interest expense													68		62		165		180		153
Income (loss) before income taxes													2,267		615		6,191		16,167		1,784
Income taxes													1,337		738		2,967		5,339		360
Net income (loss)	(796)	(1,009)	870	1,865	812	(315)	(2,450)	1,830	1,505	(377)	772	1,324	930		(123)		3,224		10,828		1,424
Basic (in Dollars per share)	$ (0.03)	$ (0.04)	$ 0.04	$ 0.08	$ 0.03	$ (0.01)	$ (0.10)	$ 0.08	$ 0.06	$ (0.02)	$ 0.03	$ 0.05	$ 0.04		$ (0.01)		$ 0.13		$ 0.45		$ 0.06
Diluted (in Dollars per share)	$ (0.03)	$ (0.04)	$ 0.04	$ 0.08	$ 0.03	$ (0.01)	$ (0.10)	$ 0.08	$ 0.06	$ (0.02)	$ 0.03	$ 0.05	$ 0.04		$ (0.01)		$ 0.13		$ 0.44		$ 0.06
Cash dividends paid per share (in Dollars per share)													$ 0.24		$ 0.36		$ 0.23		$ 0.20		$ 0.20
Basic (in Shares)													24,388		24,313		24,298		24,287		24,128
Diluted (in Shares)													24,546	[3]	24,313	[3]	24,352	[3]	24,339		24,134
Working capital	76,788				76,703				83,702				76,788		76,703		83,702		84,524		73,568
Total assets	169,888				169,179				175,226				169,888		169,179		175,226		176,021		173,845
Long-term debt, including current maturities																			1,099		1,132
Shareholders’ equity	$ 138,412				$ 141,690				$ 149,368				$ 138,412		$ 141,690		$ 149,368		$ 151,218		$ 144,218

[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 minor impairments in fiscal 2012 and 2010. See Note 6.

[3] Options to purchase 1,974,775 common shares, 2,027,450 common shares, and 1,782,868 common shares at June 30, 2014, 2013, and 2012, 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.