Note 14 - Stock Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2022
Outstanding, shares (in shares)	10,027
Outstanding, weighted average exercise price per share (in dollars per share)	$ 2.82
Granted (in shares)	3,849
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 (in shares)	0
Expired (in shares)	0
Outstanding, shares (in shares)	13,876
Outstanding, weighted average exercise price per share (in dollars per share)	$ 2.35
Outstanding, weighted average contractual life remaining in years (Year)	8 years 3 months 21 days
Outstanding, aggregate intrinsic value	$ 183
Exercisable, shares (in shares)	8,418
Exercisable, Weighted average exercise price per share (in dollars per share)	$ 2.72
Exercisable, weighted average contractual life remaining in years (Year)	7 years 7 months 6 days
Exercisable, aggregate intrinsic value
Vested and expected to vest, shares (in shares)	13,876
Vested and expected to vest, Weighted average exercise price per share (in dollars per share)	$ 2.35
Vested and expected to vest, weighted average contractual life remaining in years (Year)	8 years 3 months 21 days
Vested and expected to vest, aggregate intrinsic value	$ 183