CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 419,948	$ 167,714
Marketable securities, short-term	193,018	359,581
Accounts receivable, net of allowances for doubtful accounts and returns of $3,925 and $2,472, respectively	244,992	158,550
Inventories	26,341	19,465
Prepaid expenses and other current assets	27,469	26,700
Total current assets	911,768	732,010
Marketable securities, long-term	62,820	151,370
Property, plant and equipment, net	172,658	136,473
Equity method investments	46,268	0
Goodwill and intangible assets, net	82,987	79,162
Deferred tax assets	68,918	51,416
Other assets	13,474	8,202
Total assets	1,358,893	1,158,633
Current liabilities:
Accounts payable	33,104	34,354
Accrued liabilities	132,538	107,765
Deferred revenues	177,409	129,553
Total current liabilities	343,051	271,672
Taxes Payable	42,539	37,512
Other long-term liabilities	993	1,523
Total liabilities	386,583	310,707
Commitments and contingencies (Note 7 and 8)
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; 79,867 and 79,500 issued and outstanding, respectively)	8	8
Additional paid-in capital	854,422	821,507
Accumulated other comprehensive income (loss), net	(85)	(980)
Retained earnings	117,965	27,391
Total stockholders’ equity	972,310	847,926
Total liabilities and stockholders’ equity	$ 1,358,893	$ 1,158,633