Note 1 - Description of Business and Significant Accounting Policies - Schedule of Weighted Average Number of Shares (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Weighted average common shares outstanding - basic (in shares)	517,777,847	510,794,145
Stock options (in shares)	0	0
Series C redeemable convertible preferred stock (in shares)	0	0
Weighted average common shares outstanding - diluted (in shares)	517,777,847	510,794,145