Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2023	Jun. 30, 2023	Jun. 30, 2022
Preferred Stock, Shares Authorized (in shares)	15,000,000	15,000,000	15,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	45,000,000	45,000,000	45,000,000
Common stock, shares issued (in shares)	9,454,233	7,781,690	6,860,420
Common stock, shares outstanding (in shares)	9,451,753	7,781,690	6,769,923
Treasury stock, sharesTreasury stock, shares (in shares)	2,480	0	90,497