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Redeemable Convertible Preferred Stock (Details 1) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Derivatives, Fair Value [Line Items]    
Beginning as of January $ 137,177 $ 138,562
Decrease in fair value (64,614) (1,385)
Ending balance as of December $ 72,563 $ 137,177