Note 15 - Stock Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2022
Outstanding, shares (in shares)	10,027
Outstanding, weighted average exercise price per share (in dollars per share)	$ 2.82
Granted (in shares)	3,879
Granted, weighted average exercise price per share (in dollars per share)	$ 1.16
Granted, aggregate intrinsic value	$ 50,738
Exercised (in shares)	0
Exercised, aggregate intrinsic value
Forfeited / cancelled (in shares)	(200)
Forfeited, weighted average exercise price per share (in dollars per share)	$ 0.91
Expired (in shares)	0
Outstanding, shares (in shares)	13,706
Outstanding, weighted average exercise price per share (in dollars per share)	$ 2.37
Outstanding, weighted average contractual life remaining in years (Year)	8 years 14 days
Outstanding, aggregate intrinsic value	$ 0
Exercisable, shares (in shares)	9,354
Exercisable, Weighted average exercise price per share (in dollars per share)	$ 2.65
Exercisable, weighted average contractual life remaining in years (Year)	7 years 6 months 7 days
Exercisable, aggregate intrinsic value
Vested and expected to vest, shares (in shares)	13,706
Vested and expected to vest, Weighted average exercise price per share (in dollars per share)	$ 2.37
Vested and expected to vest, weighted average contractual life remaining in years (Year)	8 years 14 days
Vested and expected to vest, aggregate intrinsic value	$ 0