Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Stock-based compensation			$ 188,009	$ 153,373
Cost of revenues - subscription
Stock-based compensation	$ 8,942	$ 6,951	16,880	13,558
Cost of revenues - professional services and other
Stock-based compensation	7,617	6,136	14,566	12,895
Sales and marketing
Stock-based compensation	42,287	32,861	80,688	63,859
Research and development
Stock-based compensation	22,731	21,047	44,532	41,580
General and administrative
Stock-based compensation	$ 16,489	$ 11,070	$ 31,343	$ 21,481