Note 4 - Earnings Per Common Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
BASIC EARNINGS PER SHARE
Net income		$ 2,006	$ 3,782	$ 2,835	$ 7,532
Weighted average shares outstanding during the period, net of treasury shares (a) (in shares)	[1]	25,016	24,637	25,007	24,569
Weighted average vested units and shares outstanding (in shares)		261	249	250	243
Weighted average shares outstanding (in shares)		25,314	24,911	25,294	24,838
Basic earnings per share (in dollars per share)		$ 0.08	$ 0.15	$ 0.11	$ 0.30
DILUTED EARNINGS PER SHARE
Net income		$ 2,006	$ 3,782	$ 2,835	$ 7,532
Basic (in shares)		25,314	24,911	25,294	24,838
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)	[2]	489	713	565	567
Weighted average shares outstanding (in shares)	[3]	25,803	25,624	25,859	25,405
Basic earnings per share (in dollars per share)		$ 0.08	$ 0.15	$ 0.11	$ 0.30
Restricted Stock Units (RSUs) [Member]
BASIC EARNINGS PER SHARE
Weighted average vested units and shares outstanding (in shares)		37	25	37	26

[1] Includes shares accounted for like treasury stock included in the Company's non-qualified deferred compensation plan. (See Note 10.)

[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 1,682,270 common shares and 1,115,250 common shares at December 31, 2016 and 2015, respectively, and options to purchase 1,626,770 common shares and 1,506,800 common shares at December 31, 2016 and 2015, respectively were not included in the computation of the three month and six month period for diluted earnings per share, respectively, because the exercise price was greater than the average fair market value of the common shares.