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, 2023	Jun. 30, 2022
Outstanding (in shares)	34,284	9,183
Outstanding, weighted average grant date fair value (in dollars per share)	$ 40.50	$ 157.50
Granted (in shares)	6,962	29,200
Granted, weighted average grant date fair value (in dollars per share)	$ 12.47	$ 19.20
Exercised (in shares)	0	0
Exercised, weighted average grant date fair value (in dollars per share)	$ 0	$ 0
Canceled or expired (in shares)	(3,080)	(4,099)
Canceled or expired, weighted average grant date fair value (in dollars per share)	$ 139.29	$ 148.80
Outstanding (in shares)	38,166	34,284
Outstanding, weighted average grant date fair value (in dollars per share)	$ 27.34	$ 40.50