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Basis of Presentation (Details Narrative) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Apr. 28, 2021
Royalty percentage of gross profit on licensed products 50.00%    
Amortization period for expense sales commissions incurred, maximum 1 year    
Period for the value of unsatisfied performance obligations which are not disclosed 1 year    
Software development costs capitalized $ 123,000 $ 22,000  
Impairment of intangible assets 0    
Indefinite‑lived intangible assets $ 0    
Subsequent Event [Member]      
Amount of cash dividend payable to shareholders (in dollars per share)     $ 0.12