Note 12 - Share-based Compensation - Restricted Stock Unit and Performance Award Activity (Details)	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Unvested, number of shares (in shares) | shares	687,206
Unvested, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 3.03
Vested, number of shares (in shares) | shares	(1,398)
Vested, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 3.43
Unvested, number of shares (in shares) | shares	685,808
Unvested, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 3.03