Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 387,310	$ 676,454
Short-term investments	866,301	624,824
Accounts receivable, net of allowance for doubtful accounts of $1,011 and $2,137 at June 30, 2021 and December 31, 2020, respectively	77,257	94,339
Prepaid expenses and other current assets	40,634	39,913
Current assets held for sale	500,688	126,715
Total current assets	1,872,190	1,562,245
Property and equipment, net	65,886	64,336
Operating lease right-of-use assets, net	36,096	36,728
Goodwill	1,050,924	1,050,962
Intangible assets, net	98,447	120,555
Deposits and other long-term assets	18,390	18,084
Long-term assets held for sale	0	392,974
TOTAL ASSETS	3,141,933	3,245,884
Current liabilities:
Accounts payable	9,375	4,027
Operating lease liabilities, current	12,157	14,556
Accrued and other current liabilities	19,564	19,730
Accrued compensation	65,226	78,842
Convertible senior notes, current, net	440,497	0
Deferred revenue, current	235,960	226,356
Current liabilities held for sale	637,669	410,233
Total current liabilities	1,420,448	753,744
Convertible senior notes, non-current, net	543,306	960,896
Deferred revenue, non-current	61,366	57,897
Operating lease liabilities, non-current	56,624	41,802
Other long-term liabilities	4,586	12,339
Long-term liabilities held for sale	0	285,251
TOTAL LIABILITIES	2,086,330	2,111,929
Commitments and contingencies
Series A Convertible Preferred Stock, par value of $0.0001 per share; 400 shares authorized, issued and outstanding as of June 30, 2021 and December 31, 2020	410,124	401,050
Stockholders' equity:
Common stock, par value of $0.0001 per share; 1,000,000 shares authorized, 239,177 shares and 235,690 shares issued and outstanding as of June 30, 2021 and December 31, 2020, respectively	24	24
Additional paid-in capital	3,653,574	3,623,243
Treasury stock, at cost; 1,778 shares as of June 30, 2021 and December 31, 2020, respectively	(80,000)	(80,000)
Accumulated other comprehensive income	1,419	3,834
Accumulated deficit	(2,929,538)	(2,814,196)
Total stockholders’ equity	645,479	732,905
TOTAL LIABILITIES, CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY	$ 3,141,933	$ 3,245,884