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Note C - Summary of Significant Accounting Policies - Fair Value of Level 3 Instruments (Details) - Derivative Financial Instruments, Liabilities [Member]
12 Months Ended
Dec. 31, 2019
USD ($)
Balance at beginning of year
Warrants issued in connection with public offering (See Note I) 376,497
Employee options reclassified as derivative liability 422,484
Change in value of derivative securities – exercised 500,000
Reversal of derivative liability for exercised warrants (655,000)
Change in fair value of derivative securities - not exercised 820,954
Reversal of Level 3 of derivative liability to equity upon authorized share increase (1,464,935)
Balance at end of period