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Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mytesi    
Disaggregation of Product Revenue    
Product revenue $ 1,543,121 $ 583,269
Neonorm    
Disaggregation of Product Revenue    
Product revenue $ 46,612 $ 43,698