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Note 1 - Revision of Previously Issued Consolidated Financial Statements - Impact of Correcting Errors (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Reserve for uncertain tax positions $ 496 $ 379  
Total Long-Term Liabilities 538 445  
Total Liabilities 3,477 4,577  
Retained earnings 37,747 35,923  
Total Shareholders’ Equity 52,196 53,785 $ 54,324
Tax expense 934 1,528  
Net Income $ 3,149 $ 3,440  
Basic Net Income per Share (in dollars per share) $ 0.22 $ 0.23  
Diluted Net Income per Share (in dollars per share) $ 0.22 $ 0.23  
Previously Reported [Member]      
Reserve for uncertain tax positions   $ 0  
Total Long-Term Liabilities   66  
Total Liabilities   4,198  
Retained earnings   36,302  
Total Shareholders’ Equity   54,164  
Tax expense   1,149  
Net Income   $ 3,819  
Basic Net Income per Share (in dollars per share)   $ 0.25  
Diluted Net Income per Share (in dollars per share)   $ 0.25  
Revision of Prior Period, Adjustment [Member]      
Reserve for uncertain tax positions   $ 379  
Total Long-Term Liabilities   379  
Total Liabilities   379  
Retained earnings   (379)  
Total Shareholders’ Equity   (379)  
Tax expense   379  
Net Income   $ (379)  
Basic Net Income per Share (in dollars per share)   $ (0.02)  
Diluted Net Income per Share (in dollars per share)   $ (0.02)