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, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Net Income	$ 6,417	$ 3,105	$ 12,678	$ 6,238
Weighted average shares outstanding during the period, net of treasury shares (in shares)	27,005	26,625	26,890	26,589
Weighted average vested restricted stock units outstanding (in shares)	956	637	903	531
Weighted average shares outstanding (in shares)	28,078	27,292	27,874	27,144
Basic income per share (in dollars per share)	$ 0.23	$ 0.11	$ 0.45	$ 0.23
Basic (in shares)	28,078	27,292	27,874	27,144
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)	1,126	775	892	751
Weighted average shares outstanding (in shares)	29,204	28,067	28,766	27,895
Diluted income per share (in dollars per share)	$ 0.22	$ 0.11	$ 0.44	$ 0.22
Anti-dilutive securities (b) (in shares)	85	981	452	984
Restricted Stock Units (RSUs) [Member]
Weighted average vested restricted stock units outstanding (in shares)	117	30	81	24