Balance Sheet Detail (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011
Estimated future amortization
2012	$ 13,646
2013	11,799
2014	8,316
2015	7,543
2016	5,207
Thereafter	3,010
Total	49,521
Developed technology
Estimated future amortization
2012	9,828
2013	8,027
2014	4,936
2015	4,317
2016	2,513
Thereafter	187
Total	29,808
Other technologies
Estimated future amortization
2012	3,818
2013	3,772
2014	3,380
2015	3,226
2016	2,694
Thereafter	2,823
Total	$ 19,713

The aggregate estimated amortization expense for succeeding fiscal years for intangible assets subject to amortization.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

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The amount of amortization expense expected to be recognized for the remainder of the finite-lived intangible asset useful life after the fifth succeeding fiscal year.

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The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year one of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year two of the five succeeding fiscal years.

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