Stock Plans (Summary of Total Compensation Recognized Related to Outstanding Stock Options) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2012
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Oct. 02, 2011
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Sep. 30, 2012
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Oct. 02, 2011
|
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Total pre-tax stock-based compensation expense | $ 5,101 | $ 1,467 | $ 15,352 | $ 9,427 |
Cost of sales [Member]
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Total pre-tax stock-based compensation expense | 327 | 243 | 906 | 750 |
Research and development expenses [Member ]
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Total pre-tax stock-based compensation expense | 186 | 138 | 547 | 432 |
Selling, general and administrative and other expenses [Member]
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Total pre-tax stock-based compensation expense | $ 4,588 | $ 1,086 | $ 13,899 | $ 8,245 |