Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 236,447	$ 372,870
Short-term investments	183,834	308,506
Accounts receivable, net of allowance of $281 at September 30, 2018 and $0 at December 31, 2017	107,119	103,677
Restricted cash	10,006	12,807
Prepaid expenses	20,483	24,253
Other current assets	12,764	8,837
Total current assets	570,653	830,950
Goodwill	947,730	730,464
Intangible assets, net	127,851	64,258
Property and equipment, net	266,085	266,589
Restricted cash	25,000	20,000
Prepaid expenses	35,851	23,821
Other non-current assets	46,257	43,251
Total assets	2,019,427	1,979,333
Current liabilities:
Accounts payable	9,242	18,938
Income tax payable	1,734	6,677
Deferred revenue	172,172	134,007
Other current liabilities	119,782	123,089
Total current liabilities	302,930	282,711
Deferred revenue	2,135	568
Deferred tax liabilities, net	18,468	5,902
Other non-current liabilities	79,456	48,912
Total liabilities	402,989	338,093
Stockholders’ equity:
Common stock, $0.00000625 par value, and additional paid in capital - authorized shares: 2,020,517; shares outstanding: 861,857 shares (Class A) as of September 30, 2018 and 870,660 (Class A, 783,376, Class B, 66,767, Class C, 20,517) as of December 31, 2017	3,485,667	3,426,505
Accumulated other comprehensive income (loss)	(103,210)	(93,497)
Accumulated deficit	(1,766,019)	(1,691,768)
Total stockholders’ equity	1,616,438	1,641,240
Total liabilities and stockholders’ equity	$ 2,019,427	$ 1,979,333