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Concentrations (Details)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Concentrations (Details) [Line Items]    
Number of suppliers 2  
Total revenue    
Concentrations (Details) [Line Items]    
Percentage of total sales 10.00% 10.00%
One Licensee [Member] | Total revenue    
Concentrations (Details) [Line Items]    
Percentage of total sales 100.00%