Business Combinations (Schedule of Purchase Price Allocation) (Details) (USD $) In Thousands, unless otherwise specified	Feb. 11, 2013
Business Combinations [Abstract]
Cash	$ 82
Current assets	556
Property and equipment, net	415
In-process research and development	29,853
Goodwill	99,560
Total assets acquired	130,466
Accrued liabilities	(396)
Deferred tax liabilities, net	(4,763)
Total liabilities assumed	(5,159)
Net assets acquired	$ 125,307

The amount of acquisition cost of a business combination allocated to assets acquired.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

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- Definition

The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

+ References

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-Paragraph 51

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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The amount of acquisition cost of a business combination allocated to current assets.

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The amount of cash and cash equivalents acquired in a business combination.

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The amount of acquisition cost of a business combination allocated to accrued expenses of the acquired entity.

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- Definition

Gross amount of acquisition cost of a business combination allocated to noncurrent deferred tax liabilities.

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No definition available.

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- Definition

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.

+ References

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-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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-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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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

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-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

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The amount of acquisition cost of a business combination allocated to liabilities assumed.

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-Name Emerging Issues Task Force (EITF)

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

+ References

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-Publisher FASB

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-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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