Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans - Stock Option Activity Summary (Details) - $ / shares shares in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Outstanding (in shares)	38,166	34,284
Outstanding, weighted average grant date fair value (in dollars per share)	$ 27.34	$ 40.5
Granted (in shares)	131,840	6,962
Granted, weighted average grant date fair value (in dollars per share)	$ 10.01	$ 12.47
Exercised (in shares)	0	0
Exercised, weighted average grant date fair value (in dollars per share)	$ 0	$ 0
Canceled or expired (in shares)	(13,378)	(3,080)
Canceled or expired, weighted average grant date fair value (in dollars per share)	$ 10.7	$ 139.29
Outstanding (in shares)	156,628	38,166
Outstanding, weighted average grant date fair value (in dollars per share)	$ 14.18	$ 27.34