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
	Sep. 30, 2024	Sep. 30, 2023
Numerator
Net loss	$ (1,982)	$ (695)
Denominator
Basic weighted average common shares outstanding (in shares)	5,919,460	5,850,131
Dilutive effect of restricted stock (in shares)	0	0
Diluted weighted average common shares outstanding (in shares)	5,919,460	5,850,131
Basic net loss per common share (in dollars per share)	$ (0.33)	$ (0.12)
Diluted net loss per common share (in dollars per share)	$ (0.33)	$ (0.12)