Business Combinations (Details) (USD $) In Thousands, unless otherwise specified	Jan. 03, 2012	Dec. 31, 2011 3ware RAID Storage Adapter Business Acquisition [Member]	Dec. 31, 2011 ONStor, Inc. Acquisition [Member]
Allocation of total cash consideration based on estimated fair values
Net Tangible Assets		$ 12,272	$ 847
Identified intangible assets		5,020	15,060
Goodwill	181,601	4,250	8,812
In-process research and development			760
Total	$ 319,231	$ 21,542	$ 25,479

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 53

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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