Note 7 - Net Loss Per Share - Reconciliation of the Components of Basic and Diluted Net Loss Per Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Net loss attributable to common stock, basic	$ (7,925,487)	$ (6,827,867)	$ (29,325,788)	$ (16,275,119)
Weighted Average Shares, basic (in shares)	7,243,345	6,743,528	6,938,664	6,725,079
Income Per Share, basic (in dollars per share)	$ (1.09)	$ (1.01)	$ (4.23)	$ (2.42)
Net loss attributable to common stock, diluted	$ (7,925,487)	$ (6,827,867)	$ (29,325,788)	$ (16,275,119)
Weighted Average Shares, diluted (in shares)	7,243,345	6,743,528	6,938,664	6,725,079
Income Per Share, diluted (in dollars per share)	$ (1.09)	$ (1.01)	$ (4.23)	$ (2.42)