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Revenues By Geographic Areas (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Revenues: $ 4,136,593 $ 5,475,475 $ 12,309,979 $ 16,903,173
United States        
Revenues: 3,256,758 4,430,409 9,573,354 13,438,873
Europe        
Revenues: 533,414 711,057 1,816,803 2,642,265
Asia and rest of world        
Revenues: $ 346,421 $ 334,009 $ 919,822 $ 822,035