Note 6 - Earnings Per 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, 2026	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025	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, 2026	Jun. 30, 2025	Jun. 30, 2024
Net income		$ 6,876	$ 2,091	$ 6,348	$ 7,264	$ 8,171	$ 3,883	$ 5,647	$ 6,682	$ 5,668	$ 5,375	$ 5,906	$ 8,028	$ 22,579	$ 24,383	$ 24,977
Weighted average shares outstanding during the period, net of treasury shares (in shares)														31,725	28,808	27,981
Weighted average vested restricted stock units outstanding (in shares)														1,080	1,019	987
Weighted average shares outstanding (in shares)														32,871	29,903	29,049
Basic income per share (in dollars per share)		$ 0.19	$ 0.06	$ 0.2	$ 0.24	$ 0.27	$ 0.13	$ 0.19	$ 0.23	$ 0.19	$ 0.18	$ 0.2	$ 0.28	$ 0.69	$ 0.82	$ 0.86
Basic (in shares)														32,871	29,903	29,049
Impact of common shares to be issued under stock option plans, and Contingently issuable shares, if any (in shares)	[1]													836	929	1,019
Weighted average shares outstanding (in shares)														33,707	30,832	30,068
Diluted (in dollars per share)		$ 0.18	$ 0.06	$ 0.2	$ 0.23	$ 0.26	$ 0.13	$ 0.18	$ 0.22	$ 0.19	$ 0.18	$ 0.2	$ 0.27	$ 0.67	$ 0.79	$ 0.83
Anti-dilutive securities (in shares)	[2]													2	261	54
Restricted Stock Units (RSUs) [Member]
Weighted average vested restricted stock units outstanding (in shares)														66	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 from the computation of diluted net income per share for the three and nine months ended March 31, 2026, and March 31, 2025, 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.