CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 790,696	$ 550,425
Short-term investments:	0	318,202
Accounts receivable, net of allowance for doubtful accounts of $11,057 and $6,756, respectively	533,004	550,291
Inventories	120,977	112,051
Prepaid expenses and other current assets	131,848	102,450
Total current assets	1,576,525	1,633,419
Property, plant and equipment, net	663,491	631,730
Operating lease right-of-use assets, net	70,366	56,244
Goodwill and intangible assets, net	73,751	75,692
Other assets	29,566	39,610
Total assets	3,964,840	2,500,702
Current liabilities:
Accounts payable	72,690	87,250
Accrued liabilities	259,459	319,958
Deferred revenues	578,537	563,762
Total current liabilities	910,686	970,970
Income tax payable	109,128	102,794
Operating Lease, Liability, Noncurrent	53,745	43,463
Other long-term liabilities	38,292	37,306
Total liabilities	1,111,851	1,154,533
Commitments and contingencies (Notes 8 and 9)
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; 78,759 and 78,433 issued and outstanding, respectively)	8	8
Additional paid-in capital	895,131	906,937
Accumulated other comprehensive income (loss), net	(193)	(688)
Retained earnings	1,958,043	439,912
Total stockholders’ equity	2,852,989	1,346,169
Total liabilities and stockholders’ equity	3,964,840	2,500,702
Deferred Income Tax Assets, Net	$ 1,551,141	$ 64,007