Note 11 - Stock-based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member] shares in Thousands	9 Months Ended
	Mar. 31, 2022 $ / shares shares
Outstanding (in shares) | shares	2,023
Outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 2.05
Granted (in shares) | shares	0
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0
Vested (in shares) | shares	(693)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 2.08
Canceled or expired (in shares) | shares	(1)
Canceled or expired (in dollars per share) | $ / shares	$ 2.33
Outstanding (in shares) | shares	1,329
Outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 2.04