Note 3 - Basic and Diluted Earnings Per Share (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 of Treasury Shares [Member]
Weighted average shares outstanding during the period, net of treasury shares (a) (in shares)	[1]													24,720		24,187		24,084
Restricted Stock Units (RSUs) [Member]
Weighted restricted stock units outstanding during the period (in shares)														24
Deferred Compensation Plan [Member]
Weighted restricted stock units outstanding during the period (in shares)														244		309		304
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
Weighted average shares outstanding (in shares)														24,988		24,496		24,388		24,313	24,298
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
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)	[2]													604		142		158
Weighted average shares outstanding (c) (in shares)														25,592	[3]	24,638	[3]	24,546	[3]	24,313	24,352
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

[1] Includes shares accounted for like treasury stock.

[2] Calculated using the "Treasury Stock' method as if dilutive securities were exercised and the funds were used to purchase common shares at the average market price during the period.

[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.