Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) (USD $)
In Thousands, unless otherwise specified |
Jun. 30, 2013
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Dec. 31, 2012
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Jul. 01, 2012
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Dec. 31, 2011
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Mar. 31, 2009
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Fair Value, Balance Sheet Grouping, Financial Statement Captions | |||||||||
Cash and cash equivalents, Carrying Value | $ 227,601 | $ 338,920 | $ 589,056 | $ 573,736 | |||||
Convertible debt, Carrying Value | 177,532 | 169,896 | |||||||
Japan loan, Carrying Value | 10,000 | ||||||||
Carrying Value
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Fair Value, Balance Sheet Grouping, Financial Statement Captions | |||||||||
Cash and cash equivalents, Carrying Value | 227,601 | 338,920 | |||||||
Marketable securities, Carrying Value | 803,994 | 667,388 | |||||||
Convertible debt, Carrying Value | 177,532 | [1] | 169,896 | [1] | |||||
Japan loan, Carrying Value | 2,033 | 3,491 | |||||||
Fair Value
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Fair Value, Balance Sheet Grouping, Financial Statement Captions | |||||||||
Cash and cash equivalents, Fair Value | 227,601 | 338,920 | |||||||
Marketable securities, Fair Value | 803,994 | 667,388 | |||||||
Convertible debt, Fair Value | 610,726 | [1] | 589,000 | [1] | |||||
Japan loan, Fair Value | $ 2,033 | $ 3,491 | |||||||
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