Note 12 - Share-based Compensation - Restricted Stock Unit and Performance Award Activity (Details)	3 Months Ended
	Mar. 31, 2023 $ / shares shares
Unvested, number of shares (in shares) | shares	822,737
Unvested, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 2.37
Granted, number of shares (in shares) | shares	1,398
Granted, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 3.43
Unvested, number of shares (in shares) | shares	824,135
Unvested, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 2.37