CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 304,907	$ 240,675
Restricted cash	1,564	4,026
Marketable securities, short-term	23,142	7,395
Accounts receivable, net of allowance for doubtful accounts and returns of $1,381 and $780, respectively	105,902	91,537
Inventories	15,137	9,402
Prepaid expenses and other current assets	33,594	31,781
Total current assets	484,246	384,816
Marketable securities, long-term	20,802	0
Property, plant and equipment, net	75,248	53,965
Goodwill	111,162	135,383
Intangible assets, net	46,817	50,022
Deferred tax assets	27,189	22,337
Other assets	2,700	2,741
Total assets	768,164	649,264
Current liabilities:
Accounts payable	14,415	19,265
Accrued liabilities	71,949	76,600
Deferred revenues	65,324	52,252
Total current liabilities	151,688	148,117
Other long-term liabilities	14,311	10,366
Total liabilities	165,999	158,483
Commitments and contingencies (Note 7)
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; 81,784 and 78,776 issued and outstanding, respectively)	8	8
Additional paid-in capital	676,605	607,240
Accumulated other comprehensive income (loss), net	(19)	46
Accumulated deficit	(74,429)	(116,513)
Total stockholders' equity	602,165	490,781
Total liabilities and stockholders' equity	$ 768,164	$ 649,264