Note 12 - Net Loss Per Share Attributable to Common Stockholders - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Antidilutive Securities (in shares)	8,420	2,673	2,437
Service Period Stock Options [Member]
Antidilutive Securities (in shares)	1,163	1,291	1,291
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities (in shares)	372	275	173
Performance Stock Options [Member]
Antidilutive Securities (in shares)	1,109	1,107	972
Convertible Senior Notes [Member]
Antidilutive Securities (in shares)	5,776	0	0