Note 1 - Summary of Significant Accounting Policies - Changes to Stock Value (Details) (Parentheticals) - $ / shares	Dec. 31, 2024	May 02, 2024	Feb. 13, 2024	Dec. 31, 2023	Jul. 26, 2021
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001	$ 0.2	$ 0.0001
Series A-1 Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	0.0001		0.2	0.0001	$ 0.1
Series B Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.0001		0.2	$ 0.0001	$ 0.1
Before Stock Split [Member]
Common stock, par value (in dollars per share)			0.0001
Before Stock Split [Member] | Series A-1 Preferred Stock [Member]
Preferred stock, par value (in dollars per share)			0.0001
Before Stock Split [Member] | Series B Preferred Stock [Member]
Preferred stock, par value (in dollars per share)			$ 0.0001