Subsequent Events - Additional Information (Details) - Subsequent - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended
	Oct. 19, 2015	Oct. 07, 2015	Oct. 31, 2015
Subsequent Event [Line Items]
Preferred stock conversion basis		In connection with the closing of the IPO, all of the Company’s outstanding preferred shares were converted into ordinary shares of the Company on a one-to-one basis.
Warrant
Subsequent Event [Line Items]
Warrants exercised for ordinary shares			565,696
Proceeds from warrant exercises			$ 2,003
IPO
Subsequent Event [Line Items]
Sale of ordinary shares		7,500,000
Shares issued, price per share		$ 22.00
Net proceeds from stock issuance, net of underwriting discounts and commissions		$ 150,500
Over Allotment Option
Subsequent Event [Line Items]
Sale of ordinary shares	376,195
Shares issued, price per share	$ 22.00
Common stock available for underwriters		1,125,000
Net proceeds from stock issuance, net of underwriting discounts and commissions	$ 7,700