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Note O - Related Party Transactions (Details Textual) - USD ($)
1 Months Ended 9 Months Ended 12 Months Ended
Apr. 29, 2020
Jul. 10, 2017
Jul. 31, 2017
Sep. 30, 2020
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    
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]                
Deferred Compensation Arrangement with Individual, Compensation Expense         125,000 0    
Increase (Decrease) in Deferred Compensation   (100,000) 100,000          
Employment Agreement, Base Compensation   $ 200,000 $ 200,000          
Managing Director, China Operations [Member]                
Deferred Compensation Arrangement with Individual, Compensation Expense         125,000 0    
Interim Chief Executive Officer [Member]                
Royalty on Net Sales, Percentage             2.50%  
Director Clinical Affair [Member]                
Royalty on Net Sales, Percentage             2.50% 5.00%
Manufacturing Agreement for Handpieces [Member]                
Related Party Transaction, Purchases from Related Party $ 370,260       1,700,000 1,900,000    
Manufacturing Agreement for Handpieces [Member] | Accounts Payable, Related Parties, Current [Member]                
Due to Related Parties, Current, Total         548,000 362,000    
Consulting Services [Member]                
Related Party Transaction, Expenses from Transactions with Related Party         100,000 100,000    
Deferred Compensation Arrangement with Individual, Compensation Expense         $ 45,000 $ 15,000    
Consulting Services [Member] | Innovest S.p.A. [Member]                
Related Party Transaction, Expenses from Transactions with Related Party       $ 60,000