Note 13 - Stock-based Compensation - RSU Activity (Details) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Beginning of period, Restricted stock units, Unvested (in shares) | shares	8,483,491
Beginning of period, Restricted stock units, Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.04
Restricted stock units, Granted (in shares) | shares	8,616,931
Restricted stock units, Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.7
Restricted stock units, Vested (in shares) | shares	(3,937,130)
Restricted stock units, Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.1
Restricted stock units, Forfeited (in shares) | shares	(837,115)
Restricted stock units, Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.76
Unvested (in shares) | shares	12,326,177
Unvested December 31, 2022 (in dollars per share) | $ / shares	$ 0.81