Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Dec. 31, 2023	Jun. 30, 2023
Accounts Receivable, Allowance for Credit Loss, Current	$ 448	$ 435
Preferred Stock, No Par Value (in dollars per share)	$ 0	$ 0
Preferred Stock, Shares Authorized (in shares)	1,000,000	1,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Common Stock, No Par Value (in dollars per share)	$ 0	$ 0
Common Stock, Shares Authorized (in shares)	50,000,000	50,000,000
Common Stock, Shares, Outstanding (in shares)	29,059,820	28,488,570