Note 14 - Share-based Compensation - Restricted Stock Unit and Performance Award Activity (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Unvested, number of shares (in shares) | shares	918,448
Unvested, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 2.73
Granted, number of shares (in shares) | shares	748,694
Granted, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 1.75
Vested, number of shares (in shares) | shares	(818,956)
Vested, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 2.23
Forfeited, number of shares (in shares) | shares	(25,449)
Forfeited, weighted average grant-date fair value per share (in dollars per share) | $ / shares	$ 2.60
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