Net Loss Per Share - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 10, 2015	Dec. 31, 2015
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Deemed dividend to convertible preferred shareholders		$ 24,890
Series D and E Preferred Shares
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Deemed dividend to convertible preferred shareholders	$ 24,900	$ 24,900