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		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Numerator
Net loss	$ (2,191)	$ (3,070)	$ (4,173)	$ (3,765)
Denominator
Basic weighted average common shares outstanding (in shares)	5,920,671	5,850,131	5,920,066	5,850,131
Dilutive effect of restricted stock (in shares)	0	0	0	0
Diluted weighted average common shares outstanding (in shares)	5,920,671	5,850,131	5,920,066	5,850,131
Basic net loss per common share (in dollars per share)	$ (0.37)	$ (0.52)	$ (0.7)	$ (0.64)
Diluted net loss per common share (in dollars per share)	$ (0.37)	$ (0.52)	$ (0.7)	$ (0.64)