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Note 6 - Net Loss Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Net loss $ (2,912) $ (2,530)
Denominator for basic and diluted net loss per share — weighted average common stock outstanding (in shares) 1,631 1,612
Net loss per common share (in dollars per share) $ (1.79) $ (1.57)