XML 26 R13.htm IDEA: XBRL DOCUMENT

Redeemable convertible preferred stock	9 Months Ended
Redeemable convertible preferred stock	Sep. 30, 2018
Redeemable convertible preferred stock
Redeemable convertible preferred stock	7. Redeemable convertible preferred stock The Company has authorized preferred stock amounting to 5,000,000 shares as of September 30, 2018 and December 31, 2017. The authorized preferred stock was classified under stockholders’ equity at September 30, 2018 and December 31, 2017.