Note 4 - Warrants - Warrant Activity (Details) - Liability Classified Warrants [Member] - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Balance (in shares)	1,082,895
Balance, weighted average remaining contractual life (Year)	3 years 1 month 6 days	5 years 1 month 6 days
Granted (in shares)	5,056,054
Granted (Year)	2 years 10 months 24 days
Expired warrants (in shares)	(75,909)
Balance (in shares)	6,063,040	1,082,895
Exercisable (in shares)	1,006,986
Exercisable, weighted average remaining contractual life (Year)	4 years 1 month 6 days
Minimum [Member]
Balance, warrant exercise price (in dollars per share)	$ 9.6
Granted (in dollars per share)	2.23
Expired warrants (in dollars per share)	99
Balance, warrant exercise price (in dollars per share)	2.23	$ 9.6
Exercisable, warrant exercise price (in dollars per share)	2.23
Maximum [Member]
Balance, warrant exercise price (in dollars per share)	157.5
Granted (in dollars per share)	2.79
Expired warrants (in dollars per share)	99
Balance, warrant exercise price (in dollars per share)	94.5	157.5
Exercisable, warrant exercise price (in dollars per share)	94.5
Weighted Average [Member]
Balance, warrant exercise price (in dollars per share)	24.32
Granted (in dollars per share)	2.24
Expired warrants (in dollars per share)	99
Balance, warrant exercise price (in dollars per share)	12.9	$ 24.32
Exercisable, warrant exercise price (in dollars per share)	$ 8.75