Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Dec. 31, 2024	Jun. 30, 2024
Trade accounts receivable, allowance for expected credit loss	$ 80	$ 209
Provision for obsolete inventory	$ 771	$ 679
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	15,000,000	15,000,000
Common stock, shares issued (in shares)	4,250,305	4,250,305
Common stock, shares outstanding (in shares)	4,250,305	4,250,305