CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Stock-based compensation	$ 100,431	$ 41,494	$ 149,339	$ 70,380
Cost of revenue
Stock-based compensation	2,884	1,316	5,292	2,474
Selling and marketing
Stock-based compensation	25,454	6,860	32,496	13,332
Technology and content
Stock-based compensation	28,820	5,559	39,441	12,343
General and administrative
Stock-based compensation	42,803	$ 27,759	60,467	$ 42,231
Restructuring and related reorganization charges
Stock-based compensation	$ 470		$ 11,643