Note 15 - Equity Incentive Plans - Restricted Stock Activity (Details)	6 Months Ended
	Dec. 31, 2024 $ / shares shares
Granted, shares (in shares) | shares	20,000
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.79
Restricted Stock [Member]
Unvested, shares (in shares) | shares	24,105
Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 100.34
Vested, shares (in shares) | shares	(7,853)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 15.33
Unvested, shares (in shares) | shares	36,252
Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 64.38