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Summary Of Significant Accounting Policies (Minimum Future Licensing Revenues) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
License And Collaboration Agreements [Line Items]
Remainder of 2012	$ 22,848
2013	79,240
2014	58,997
2015	37,615
2016	29,042
Thereafter	143,137
Fixed non-cancelable minimum licensing revenues	$ 370,879

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Minimum future licensing revenues, total.

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Minimum future licensing revenues, in first full year.

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Minimum future licensing revenues, in fourth full year.

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Minimum future licensing revenues, in second full year.

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Minimum future licensing revenues, in third full year.

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Minimum future licensing revenues, remainder of current year.

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Minimum future licensing revenues, thereafter.

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