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
		Sep. 30, 2019	Sep. 30, 2018
BASIC EARNINGS (LOSS) PER SHARE
Net income		$ 4,475	$ 1,749
Weighted average shares outstanding, net of treasury shares (a) (in shares)	[1]	26,024	25,752
Weighted average vested restricted stock units outstanding (in shares)		188	227
Weighted average shares outstanding (in shares)		26,236	26,032
Basic earnings per share (in dollars per share)		$ 0.17	$ 0.07
Basic (in shares)		26,236	26,032
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)	[2]	57	333
Weighted average shares outstanding (c) (in shares)	[3]	26,293	26,365
Diluted earnings per share (in dollars per share)		$ 0.17	$ 0.07
Restricted Stock Units (RSUs) [Member]
BASIC EARNINGS (LOSS) PER SHARE
Weighted average vested restricted stock units outstanding (in shares)		24	53

[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 2,861,423 common shares and 3,146,466 common shares at September 30, 2019 and 2018, respectively, were not included in the computation of the three month period for diluted earnings per share, respectively, because the exercise price was greater than the average fair market value of the common shares.