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, 2023	Sep. 30, 2022
Net Income		$ 8,028	$ 6,262
Weighted average shares outstanding during the period, net of treasury shares (in shares)		27,738	26,730
Weighted average vested restricted stock units outstanding (in shares)		937	865
Weighted average shares outstanding (in shares)		28,757	27,641
Basic earnings per common share (in dollars per share)		$ 0.28	$ 0.23
Basic (in shares)		28,757	27,641
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)	[1]	1,198	1,023
Weighted average shares outstanding (in shares)		29,955	28,664
Diluted earnings per common share (in dollars per share)		$ 0.27	$ 0.22
Anti-dilutive securities (b) (in shares)	[2]	0	213
Restricted Stock Units (RSUs) [Member]
Weighted average vested restricted stock units outstanding (in shares)		82	46

[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 months ended September 30, 2023, and September 30, 2022, 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.