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Note C - Summary of Significant Accounting Policies (Details Textual)
 12 Months Ended
Apr. 01, 2024
USD ($)
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
shares
Number of Operating Segments   2 2
Marketable Securities, Current   $ 0 $ 2,976,573
Unrecognized Tax Benefits   0 $ 0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense   $ 0  
Proceeds From Sale of Net Operating Loss Amount $ 2,000,000    
Sale of Net Operating Losses, Physical Presence Requirement, Years (Year) 5 years    
Sale of Net Operating Losses, Contingent Liability, Amount $ 2,200,000    
Weighted Average Number of Shares Outstanding, Basic (in shares) | shares   79,791,188 72,775,781
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares   3,417,154 3,771,151
Marketable Securities     $ 2,976,573
Accounts Receivable, Allowance for Credit Loss   $ 10,000 10,000
Minimum [Member]      
Property, Plant and Equipment, Useful Life (Year)   3 years  
Maximum [Member]      
Property, Plant and Equipment, Useful Life (Year)   7 years  
US Treasury Securities [Member]      
Marketable Securities, Current   $ 0 3,000,000
Money Market Funds [Member]      
Cash Equivalents, at Carrying Value   $ 3,300,000 $ 3,000,000