Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Revenues
Product revenues	$ 1,207,787		$ 1,010,955		$ 791,508
Service revenues	288,011		207,534		175,476
Total revenues	1,495,798	[1]	1,218,489	[1]	966,984	[1]
Cost of revenues
Cost of product revenues	481,634		401,319		335,696
Cost of service revenues	116,808		101,220		82,312
Total cost of revenues	598,442		502,539		418,008
Gross profit	897,356		715,950		548,976
Operating expenses
Sales and marketing	435,614		387,208		285,312
Research and development	201,067		148,991		117,575
General and administrative	82,901		74,661		54,011
Acquisition-related costs	9,688
Amortization of purchased intangibles	9,831		5,647		5,800
Restructuring costs	9,396		8,139		15,935
Litigation reserves and payments			1,235		700
Total operating expenses	748,497		625,881		479,333
Operating income	148,859		90,069		69,643
Interest and other income (expense), net	(1,639)		(7,772)		(2,087)
Income before provision for income taxes	147,220		82,297		67,556
Provision for income taxes	11,406		13,888		17,677
Net income	$ 135,814		$ 68,409		$ 49,879
Basic net income per share	$ 0.77		$ 0.40		$ 0.30
Diluted net income per share	$ 0.75		$ 0.39		$ 0.29
Weighted average shares outstanding for basic net income per share	176,426		170,662		167,999
Weighted average shares outstanding for diluted net income per share	181,195		176,370		171,118

[1] Net revenues in the United States were $654.2 million, $568.7 million, and $460.6 million for the years ended December 31, 2011, 2010, and 2009, respectively. United States and China, individually, accounted for more than 10% of the Company's revenue in 2011. No individual country outside the United States accounted for more than 10% of the Company's revenues in 2010 or 2009.