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Note K - Employment Contract and Consulting Agreements (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Jul. 10, 2017
Jul. 31, 2017
Aug. 31, 2016
Dec. 31, 2021
Dec. 31, 2020
Mar. 02, 2021
Mar. 01, 2021
Director of Clinical Affairs [Member]              
Royalty Expense       $ 446,000 $ 267,000    
Professional Fees       158,000 156,000    
Accounts Payable, Related Parties       123,000 127,000    
Interim Chief Executive Officer [Member]              
Royalty on Net Sales, Percentage           2.50% 5.00%
Previous President and Chief Executive Officer [Member]              
Increase (Decrease) in Deferred Compensation $ (100,000) $ (100,000)          
Employment Agreement, Base Compensation 200,000 200,000          
Consultant [Member]              
Increase (Decrease) in Deferred Compensation (100,000) 100,000          
Employment Agreement, Base Compensation $ 200,000 $ 200,000          
Consulting Services [Member]              
Employment Agreement Term (Year)     3 years        
Related Party Transaction, Expenses from Transactions with Related Party       $ 100,000 $ 100,000