Note 5 - Stockholders' Equity- Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2026 USD ($) $ / shares shares
Outstanding, number of shares (in shares) | shares	45,579
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 137.2
Outstanding, weighted average remaining contractual term (Year)	8 years 4 months 24 days
Outstanding, aggregate intrinsic value | $	$ 0
Exercisable, number of shares (in shares) | shares	22,662
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 214.22
Exercisable, weighted average remaining contractual term (Year)	8 years
Exercisable, aggregate intrinsic value | $	$ 0