Note 3 - Net Income (Loss) Per Common Share - Basic and Diluted - Schedule of Common Stock Equivalents Outstanding (Details) - shares	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Stock options (in shares)	27,862,500	24,787,500	26,012,500
Common Stock, Other Shares, Outstanding	73,742,500		73,642,500
Series C Preferred Stock [Member]
Shares of Series C Preferred Stock (in shares)	40,630,000		40,630,000
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units (in shares)	5,250,000	7,000,000	7,000,000