Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member] - $ / shares shares in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Outstanding (in shares)	2,023	133
Outstanding, weighted average grant date fair value (in dollars per share)	$ 2.05	$ 3.95
Granted (in shares)	1,200	2,019
Granted, weighted average grant date fair value (in dollars per share)	$ 0.63	$ 2.02
Vested (in shares)	(693)	(58)
Vested, weighted average grant date fair value (in dollars per share)	$ 2.08	$ 1.84
Canceled or expired (in shares)	(254)	(71)
Canceled or expired (in dollars per share)	$ 2.02	$ 3.57
Granted (in shares)	1,200	2,019
Granted (in dollars per share)	$ 0.63	$ 2.02
Outstanding (in shares)	2,276	2,023
Outstanding, weighted average grant date fair value (in dollars per share)	$ 1.30	$ 2.05