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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
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Numerator    
Net loss $ (13,575) $ (7,217)
Denominator    
Basic weighted average common shares outstanding (in shares) 5,946,520 5,870,974
Dilutive effect of stock options and restricted stock shares (in shares) 0 0
Diluted weighted average common shares outstanding (in shares) 5,946,520 5,870,974
Basic net loss per common share (in dollars per share) $ (2.28) $ (1.23)
Diluted net loss per common share (in dollars per share) $ (2.28) $ (1.23)