Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares $ / shares in Thousands	Dec. 31, 2022	Jun. 30, 2022
Preferred shares, par value (in dollars per share)	$ 0	$ 0
Preferred shares, authorized shares (in shares)	1,000,000	1,000,000
Preferred shares, issued (in shares)	0	0
Common shares, par value (in dollars per share)	$ 0	$ 0
Common shares, authorized shares (in shares)	50,000,000	50,000,000
Common shares, authorized shares (in shares)	50,000,000	50,000,000
Common Stock, Shares, Outstanding, Ending Balance (in shares)	28,120,755	27,484,514