Note 9 - Equity - Schedule of Warrants (Details) - USD ($)	3 Months Ended			12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Outstanding, balance (in shares)	4,069,240	4,034,337	3,321,499
Outstanding, weighted average remaining contractual term (Year)	3 years 8 months 1 day	3 years 5 months 8 days	3 years 8 months 4 days	3 years 10 months 28 days
Outstanding, weighted average exercise price (in dollars per share)	$ 19.47	$ 19.61	$ 23.01
Outstanding, aggregate intrinsic value	$ 0	$ 0	$ 807,000	$ 180,000
Issued (in shares)	1,349,305	34,903	718,348
Expired (in shares)	(90,909)		(5,510)
Outstanding, balance (in shares)	5,327,636	4,069,240	4,034,337	3,321,499
Outstanding, weighted average exercise price (in dollars per share)	$ 13.39	$ 19.47	$ 19.61	$ 23.01