Note 6 - 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, 2025	Dec. 31, 2024	Sep. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Mar. 31, 2025	Mar. 31, 2024
Net Income		$ 3,883	$ 5,647	$ 6,682	$ 5,375	$ 5,906	$ 8,028	$ 16,212	$ 19,309
Weighted average shares outstanding during the period, net of treasury shares (in shares)		28,904			28,084			28,754	27,933
Weighted average vested restricted stock units outstanding (in shares)		1,028			1,004			1,009	970
Weighted average shares outstanding (in shares)		30,003			29,163			29,841	28,981
Basic earnings per common share (in dollars per share)		$ 0.13			$ 0.18			$ 0.54	$ 0.67
Basic (in shares)		30,003			29,163			29,841	28,981
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)	[1]	963			959			949	1,024
Weighted average shares outstanding (in shares)		30,966			30,122			30,790	30,005
Diluted earnings per common share (in dollars per share)		$ 0.13			$ 0.18			$ 0.53	$ 0.64
Anti-dilutive securities (b) (in shares)	[2]	35			3			265	10
Restricted Stock Units (RSUs) [Member]
Weighted average vested restricted stock units outstanding (in shares)		71			75			78	78

[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, 2025, and March 31, 2024, 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.