Note 3 - Summary of Significant Accounting Policies - Schedule of Antidilutive Securities (Details) - shares	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Share-Based Payment Arrangement, Option [Member]
Antidilutive securities (in shares)	131,833	254,885
Restricted Stock [Member]
Antidilutive securities (in shares)	33,333	66,667
Warrant [Member]
Antidilutive securities (in shares)	5,327,636	3,302,159
Anson Note [Member]
Antidilutive securities (in shares)	3,236,280	0
Convertible Debt Securities [Member]
Antidilutive securities (in shares)	0	300,000