Redeemable Convertible Preferred Stock and Stockholders' Deficit - Additional Information (Details) - $ / shares	Dec. 31, 2016	Oct. 31, 2016	Dec. 31, 2015
Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit)
Shares authorized		105,000,000
Common stock, shares authorized	100,000,000	100,000,000	175,000,000
Common stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,000,000	5,000,000	0
Preferred stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Redeemable convertible preferred stock, shares outstanding	0		2,486,199