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Redeemable Convertible Preferred Stock	9 Months Ended
Redeemable Convertible Preferred Stock	Sep. 30, 2016
Redeemable Convertible Preferred Stock Disclosure [Abstract]
Redeemable Convertible Preferred Stock [Text Block]	7. Redeemable Convertible Preferred Stock In November 2015, upon the closing of the Company’s IPO, all issued and outstanding redeemable convertible preferred stock was automatically converted into 17,647,054 shares of common stock. The Company has authorized preferred stock amounting to 5,000,000 shares as of September 30, 2016 and December 31, 2015. The authorized preferred stock was classified under stockholders’ equity at September 30, 2016 and December 31, 2015.