Note 5 - Earnings per Common Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Net Income		$ 3,618	$ 1,472	$ 9,856	$ 5,670
Weighted average shares outstanding during the period, net of treasury shares (in shares)		26,642	26,467	26,606	26,384
Weighted average vested restricted stock units outstanding (in shares)		705	284	588	242
Weighted average shares outstanding (in shares)		27,378	26,771	27,220	26,642
Basic income per share (in dollars per share)		$ 0.13	$ 0.05	$ 0.36	$ 0.21
Basic (in shares)		27,378	26,771	27,220	26,642
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)	[1]	705	956	725	710
Weighted average shares outstanding (in shares)		28,083	27,727	27,945	27,352
Diluted income per share (in dollars per share)		$ 0.13	$ 0.05	$ 0.35	$ 0.21
Anti-dilutive securities (b) (in shares)	[2]	1,427	654	1,043	1,017
Restricted Stock Units (RSUs) [Member]
Weighted average vested restricted stock units outstanding (in shares)		31	20	26	16

[1] 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.

[2] Anti-dilutive securities were excluded from the computation of diluted net income per share for the three and nine months ended March 31, 2022 and March 31, 2021 because the exercise price was greater than the average fair market price of the common shares or because the assumed proceeds from the award’s exercise or vesting was greater than the average fair market price of the common shares.