Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 199,725	$ 544,990
Short-term investments	46,694	36,232
Accounts receivable, net of allowance of $0 at March 31, 2019 and December 31, 2018	147,958	91,630
Restricted cash	35,006	35,006
Prepaid expenses	29,384	26,914
Other current assets	20,506	12,505
Total current assets	479,273	747,277
Long-term investments	5,972
Goodwill	1,471,365	934,187
Intangible assets, net	285,146	118,600
Property and equipment, net	268,101	266,557
Right-of-use assets	19,042
Restricted cash	30,018
Prepaid expenses	29,108	30,774
Other non-current assets	64,101	49,308
Total assets	2,652,126	2,146,703
Current liabilities:
Accounts payable	14,917	26,811
Income tax payable	5,633	4,895
Deferred revenue	285,953	191,299
Debt	100,000	100,000
Operating lease liabilities	9,056
Other current liabilities	257,240	156,829
Total current liabilities	672,799	479,834
Deferred revenue	1,014	1,586
Deferred tax liabilities, net	35,119	16,087
Non-current operating lease liabilities	20,098
Other non-current liabilities	181,367	52,586
Total liabilities	910,397	550,093
Stockholders’ equity:
Common stock (Class A), $0.00000625 par value, and additional paid in capital - authorized shares: 2,020,517; shares outstanding: 932,490 shares as of March 31, 2019 and 861,111 as of December 31, 2018	3,782,693	3,504,713
Accumulated other comprehensive income (loss)	(111,462)	(118,439)
Accumulated deficit	(1,929,502)	(1,789,664)
Total stockholders’ equity	1,741,729	1,596,610
Total liabilities and stockholders’ equity	$ 2,652,126	$ 2,146,703