Note 11 - Stock-based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member] shares in Thousands	3 Months Ended
	Sep. 30, 2022 $ / shares shares
Outstanding (in shares) | shares	2,276
Outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.30
Granted (in shares) | shares	0
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0
Vested (in shares) | shares	0
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0
Canceled or expired (in shares) | shares	(2)
Canceled or expired (in dollars per share) | $ / shares	$ 2.02
Outstanding (in shares) | shares	2,274
Outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.30