Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2011 Goodwill and other intangibles [Member]	Dec. 31, 2011 Accruals and reserves [Member]	Dec. 31, 2011 Deferred revenue [Member]	Dec. 31, 2011 Net operating loss [Member]	Dec. 31, 2011 Foreign accruals, reserves and NOL [Member]	Dec. 31, 2011 Tax credit carryforwards [Member]	Dec. 31, 2011 R&D expenses capitalized [Member]	Dec. 31, 2011 Property and equipment [Member]	Dec. 31, 2010 As Restated [Member]		Dec. 31, 2010 As Restated [Member] Goodwill and other intangibles [Member]	Dec. 31, 2010 As Restated [Member] Accruals and reserves [Member]	Dec. 31, 2010 As Restated [Member] Deferred revenue [Member]	Dec. 31, 2010 As Restated [Member] Net operating loss [Member]	Dec. 31, 2010 As Restated [Member] Foreign accruals, reserves and NOL [Member]	Dec. 31, 2010 As Restated [Member] Tax credit carryforwards [Member]	Dec. 31, 2010 As Restated [Member] R&D expenses capitalized [Member]	Dec. 31, 2010 As Restated [Member] Property and equipment [Member]
Deferred tax assets, current	$ 33,493		$ 9,849	$ 5,055		$ 4,522	$ 0	$ 0	$ 0	$ 54,370			$ 18,019	$ 11,026		$ 2,237	$ 0	$ 0	$ 0
Deferred tax assets, non-current	300,387		4,193	2,614		6,974	24,268	30,809	5,706	306,190			2,388	6,366		8,790	19,174	39,218	7,576
Deferred tax assets—current portion, net	32,063				14,067					50,816	[1]				23,088
Deferred tax assets—long-term portion, net	258,271				225,823					255,063	[1]				222,678
Deferred tax liability, current	0	0								0		0
Deferred tax liability, non-current	(27,672)	(27,672)								(32,051)		(32,051)
Valuation allowance for deferred tax assets, current	(1,430)									(3,554)
Valuation allowance for deferred tax assets, non-current	(14,444)									(19,076)
Net deferred tax assets, current	32,063									50,816
Net deferred tax assets, non-current	$ 258,271									$ 255,063

[1] As restated - See Note 23 “Restatement of Previously Issued Financial Statements” of Notes to Consolidated Financial Statements.