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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands | Dec. 31, 2022 | Jun. 30, 2022
--- | --- | ---
Allowance for doubtful accounts | $ 220 | $ 243
Provision for obsolete inventory | $ 649 | $ 674
Common stock, no par value (in dollars per share) | $ 0 | $ 0
Common stock, authorized (in shares) | 15,000,000 | 15,000,000
Common stock, issued (in shares) | 4,076,680 | 4,071,680
Common stock, outstanding (in shares) | 4,076,680 | 4,071,680

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