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Note H - Intangible Assets (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets, Amortization Expense, Year Three $ 14,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 14,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Five 14,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 14,000  
Amortization of Intangible Assets 13,606 $ 13,606
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 14,000  
Finite-Lived Intangible Assets, Amortization Expense, after Year Five $ 78,000