CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 404,359	$ 550,425
Short-term investments:	0	318,202
Accounts receivable, net of allowance for doubtful accounts of $17,099 and $6,756, respectively	473,314	550,291
Inventories	131,276	112,051
Prepaid expenses and other current assets	140,295	102,450
Total current assets	1,149,244	1,633,419
Property, plant and equipment, net	668,951	631,730
Operating lease right-of-use assets, net	68,578	56,244
Goodwill and intangible assets, net	543,211	75,692
Deferred tax assets	1,568,293	64,007
Other assets	27,580	39,610
Total assets	4,025,857	2,500,702
Current liabilities:
Accounts payable	94,987	87,250
Accrued liabilities	244,774	319,958
Deferred revenues	601,831	563,762
Total current liabilities	941,592	970,970
Income tax payable	115,257	102,794
Operating lease liabilities	50,619	43,463
Other long-term liabilities	73,344	37,306
Total liabilities	1,180,812	1,154,533
Commitments and contingencies (Notes 9 and 10)
Stockholders’ equity:
Preferred stock, $0.0001 par value (5,000 shares authorized; none issued)	0	0
Common stock, $0.0001 par value (200,000 shares authorized; 78,781 and 78,433 issued and outstanding, respectively)	8	8
Additional paid-in capital	918,495	906,937
Accumulated other comprehensive income (loss), net	9,101	(688)
Retained earnings	1,917,441	439,912
Total stockholders’ equity	2,845,045	1,346,169
Total liabilities and stockholders’ equity	$ 4,025,857	$ 2,500,702