CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Share-based compensation expense			$ 36,341	$ 23,614
Cost of revenue
Share-based compensation expense	$ 1,802	$ 1,114	3,435	2,004
Research and development
Share-based compensation expense	6,749	4,446	13,376	8,510
Sales and marketing
Share-based compensation expense	5,684	3,937	11,123	6,369
General and administrative
Share-based compensation expense	$ 4,410	$ 3,890	$ 8,407	$ 6,731