Note 3 - Summary of Significant Accounting Policies - Schedule of Antidilutive Securities (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Potentially dilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	9,376	6,471
Restricted Stock Units (RSUs) [Member]
Potentially dilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	1,500	900
Share-Based Payment Arrangement, Option [Member]
Potentially dilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	7,876	5,378
Restricted Stock [Member]
Potentially dilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	0	193