Note 2 - Basis of Presentation and Significant Accounting Policies - Schedule of Antidilutive Securities Excluded From Computation of Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	7,336,239	3,512,462
Common Stock Warrants [Member]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	2,855,101	331,580
Restricted Stock Units (RSUs) [Member]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	873,820	0
Share-Based Payment Arrangement, Option [Member]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	3,607,318	3,180,882