Note 7 - Stock Options and Restricted Shares - Stock Options Outstanding (Details) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Outstanding (in shares)	1,207,888
Outstanding Options, weighted average exercise price (in dollars per share)	$ 3.71
Outstanding, weighted average remaining contractual term (Year)	5 years 6 months 29 days	8 years 3 months 10 days
Options Granted (in shares)	(2,778)
Options Granted, Exercise Price (in dollars per share)	$ 2.65
Options Granted (in shares)	2,778
Outstanding (in shares)	5,641,252	1,207,888
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.59	$ 3.71
Options at 2.11 [Member]
Outstanding, weighted average remaining contractual term (Year)	9 years 5 months 19 days
Options Granted (in shares)	(1,378,364)
Options Granted, Exercise Price (in dollars per share)	$ 2.11
Options Granted (in shares)	1,378,364
Outstanding (in shares)	1,378,364
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.11
Options at 2.66 [Member]
Outstanding, weighted average remaining contractual term (Year)	9 years 4 months 13 days
Options Granted (in shares)	(25,000)
Options Granted, Exercise Price (in dollars per share)	$ 2.66
Options Granted (in shares)	25,000
Outstanding (in shares)	25,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.66
Options at $2.44 [Member]
Outstanding, weighted average remaining contractual term (Year)	9 years 4 months 24 days
Options Granted (in shares)	(100,000)
Options Granted, Exercise Price (in dollars per share)	$ 2.44
Options Granted (in shares)	100,000
Outstanding (in shares)	100,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.44
Options at $1.50 [Member]
Outstanding, weighted average remaining contractual term (Year)	2 years 3 months 18 days
Options Granted (in shares)	(800,000)
Options Granted, Exercise Price (in dollars per share)	$ 1.5
Options Granted (in shares)	800,000
Outstanding (in shares)	800,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 1.5
Options at $2.75 [Member]
Outstanding, weighted average remaining contractual term (Year)	2 years 4 months 6 days
Options Granted (in shares)	(2,000,000)
Options Granted, Exercise Price (in dollars per share)	$ 2.75
Options Granted (in shares)	2,000,000
Outstanding (in shares)	2,000,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.75
Option at $2.65 [Member]
Outstanding, weighted average remaining contractual term (Year)	8 years 6 months 18 days
Options Forfeited (in shares)	(7,222)
Options Forfeited, Exercise Price (in dollars per share)	$ 2.65
Outstanding (in shares)	5,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.65
Options at $1.76 [Member]
Outstanding, weighted average remaining contractual term (Year)	9 years 8 months 26 days
Options Granted (in shares)	(100,000)
Options Granted, Exercise Price (in dollars per share)	$ 1.76
Options Granted (in shares)	100,000
Outstanding (in shares)	100,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 1.76
Options at $1.49 [Member]
Outstanding, weighted average remaining contractual term (Year)	9 years 8 months 26 days
Options Granted (in shares)	(20,000)
Options Granted, Exercise Price (in dollars per share)	$ 1.49
Options Granted (in shares)	20,000
Outstanding (in shares)	20,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 1.49
Options at $2.20 [Member]
Outstanding, weighted average remaining contractual term (Year)	9 years 8 months 23 days
Options Granted (in shares)	(20,000)
Options Granted, Exercise Price (in dollars per share)	$ 2.2
Options Granted (in shares)	20,000
Outstanding (in shares)	20,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.2
Option at 2.00 [Member]
Outstanding, weighted average remaining contractual term (Year)	7 years 3 months 7 days
Outstanding (in shares)	250,000
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2
Options at $2.40 [Member]
Outstanding, weighted average remaining contractual term (Year)	7 years 3 months 7 days
Outstanding (in shares)	90,893
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.4
Option at $9.00 [Member]
Outstanding, weighted average remaining contractual term (Year)	6 years 2 months 23 days
Outstanding (in shares)	256,750
Outstanding Options, weighted average exercise price (in dollars per share)	$ 9
Options at 26.20 [Member]
Outstanding, weighted average remaining contractual term (Year)	3 years 6 months 25 days
Outstanding (in shares)	6,750
Outstanding Options, weighted average exercise price (in dollars per share)	$ 26.2
Option at $2.10 [Member]
Outstanding, weighted average remaining contractual term (Year)	8 years 9 months 10 days
Outstanding (in shares)	588,495
Outstanding Options, weighted average exercise price (in dollars per share)	$ 2.1