Note 16 - Stock Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2023
Outstanding, shares (in shares)	13,906
Outstanding, weighted average exercise price per share (in dollars per share)	$ 2.35
Granted (in shares)	6,691
Granted, weighted average exercise price per share (in dollars per share)	$ 0.82
Granted, aggregate intrinsic value	$ 27
Exercised (in shares)	0
Exercised, weighted average exercise price per share (in dollars per share)	$ 0
Forfeited (in shares)	(419)
Forfeited, weighted average exercise price per share (in dollars per share)	$ 0.9
Expired (in shares)	(4)
Expired, weighted average exercise price per share (in dollars per share)	$ 870.4
Outstanding, shares (in shares)	20,174
Outstanding, weighted average exercise price per share (in dollars per share)	$ 1.68
Outstanding, weighted average contractual life remaining in years (Year)	7 years 10 months 9 days
Outstanding, aggregate intrinsic value	$ 117
Exercisable, shares (in shares)	13,704
Exercisable, Weighted average exercise price per share (in dollars per share)	$ 2.04
Exercisable, weighted average contractual life remaining in years (Year)	7 years 1 month 17 days
Vested and expected to vest, shares (in shares)	20,174
Vested and expected to vest, Weighted average exercise price per share (in dollars per share)	$ 1.68
Vested and expected to vest, weighted average contractual life remaining in years (Year)	7 years 10 months 9 days
Vested and expected to vest, aggregate intrinsic value	$ 117