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								12 Months Ended
		Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2025	Jun. 30, 2024
Net Income		$ 8,171	$ 3,883	$ 5,647	$ 6,682	$ 5,668	$ 5,375	$ 5,906	$ 8,028	$ 24,383	$ 24,977
Weighted average shares outstanding during the period, net of treasury shares (in shares)										28,808	27,981
Weighted average vested restricted stock units outstanding (in shares)										1,019	987
Weighted average shares outstanding (in shares)										29,903	29,049
Basic income per share (in dollars per share)		$ 0.27	$ 0.13	$ 0.19	$ 0.23	$ 0.19	$ 0.18	$ 0.2	$ 0.28	$ 0.82	$ 0.86
Basic (in shares)										29,903	29,049
Impact of common shares to be issued under stock option plans, and Contingently issuable shares, if any (in shares)	[1]									929	1,019
Weighted average shares outstanding (in shares)										30,832	30,068
Diluted income per share (in dollars per share)		$ 0.26	$ 0.13	$ 0.18	$ 0.22	$ 0.19	$ 0.18	$ 0.2	$ 0.27	$ 0.79	$ 0.83
Anti-dilutive securities (in shares)	[2]									261	54
Restricted Stock Units (RSUs) [Member]
Weighted average vested restricted stock units outstanding (in shares)										76	81

[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 in the computation of diluted earnings per share for the year ended June 30, 2025, and June 30, 2024, because the exercise price was greater than the 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.