Note 7 - Warrants and Registration Rights Agreements - Summary of the Warrants Issued and Changes (Details)	9 Months Ended
	Sep. 30, 2024 $ / shares shares
Warrants and Rights Note Disclosure [Abstract]
Outstanding, beginning balance (in shares) | shares	4,500,000
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 0.01
Granted (in shares) | shares	0
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 0
Canceled / Expired (in shares) | shares	(2,500,000)
Canceled / expired, weighted average exercise price (in dollars per share) | $ / shares	$ (0.01)
Exercised (in shares) | shares	0
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 0
Outstanding, ending balance (in shares) | shares	2,000,000
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 0.01