Note 3 - Net Income (Loss) Per Common Share - Basic and Diluted - Calculation of Diluted Shares (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Weighted average common shares outstanding - basic (in shares)	528,088,472	523,138,891	526,568,064	522,028,572
Stock Options (in shares)	0	0	0	0
Series C Preferred Stock (in shares)	0	0	0	0
Weighted average common shares outstanding - diluted (in shares)	528,088,472	523,138,891	526,568,064	522,028,572