Note A - Basis of Presentation and Summary of Significant Accounting Policies - Calculation of Basic and Diluted Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Numerator
Net loss	$ (2,186)	$ (1,578)	$ (6,359)	$ (5,343)
Denominator
Basic weighted average common shares outstanding (in shares)	5,942,691	5,867,528	5,927,608	5,855,930
Dilutive effect of restricted stock (in shares)	0	0	0	0
Diluted weighted average common shares outstanding (in shares)	5,942,691	5,867,528	5,927,608	5,855,930
Basic net loss per common share (in dollars per share)	$ (0.37)	$ (0.27)	$ (1.07)	$ (0.91)
Diluted net loss per common share (in dollars per share)	$ (0.37)	$ (0.27)	$ (1.07)	$ (0.91)