Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 691,343	$ 544,990
Short-term investments	137,265	36,232
Accounts receivable, net of allowance of $0 at June 30, 2019 and December 31, 2018	144,935	91,630
Restricted cash	25,006	35,006
Prepaid expenses	24,054	26,914
Assets held for sale	310,902
Other current assets	9,992	12,505
Total current assets	1,343,497	747,277
Long-term investments	2,004
Goodwill	1,460,896	934,187
Intangible assets, net	269,923	118,600
Property and equipment, net	18,043	266,557
Right-of-use assets	17,249
Restricted cash	30,000
Prepaid expenses	28,928	30,774
Other non-current assets	13,712	49,308
Total assets	3,184,252	2,146,703
Current liabilities:
Accounts payable	21,909	26,811
Income tax payable	11,155	4,895
Deferred revenue	356,932	191,299
Debt		100,000
Operating lease liabilities	9,042
Liabilities related to assets held for sale	46,279
Other current liabilities	229,882	156,829
Total current liabilities	675,199	479,834
Convertible senior notes, net	558,394
Deferred revenue	944	1,586
Deferred tax liabilities, net	21,635	16,087
Non-current operating lease liabilities	17,917
Other non-current liabilities	187,212	52,586
Total liabilities	1,461,301	550,093
Stockholders’ equity:
Common stock (Class A), $0.00000625 par value, and additional paid in capital - authorized shares: 2,020,517; shares outstanding: 940,224 shares as of June 30, 2019 and 861,111 as of December 31, 2018	3,846,919	3,504,713
Accumulated other comprehensive income (loss)	(122,026)	(118,439)
Accumulated deficit	(2,001,942)	(1,789,664)
Total stockholders’ equity	1,722,951	1,596,610
Total liabilities and stockholders’ equity	$ 3,184,252	$ 2,146,703