Employee Benefit Plans (Schedule Of Total Stock-Based Compensation Expense Resulting From Stock Options, Restricted Stock Awards, And The Employee Stock Purchase Plan) (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] | ||||
Stock-based compensation expense | $ 4,019 | $ 3,454 | $ 10,806 | $ 10,334 |
Cost Of Revenue [Member]
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Stock-based compensation expense | 473 | 259 | 1,021 | 737 |
Research And Development [Member]
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Stock-based compensation expense | 778 | 606 | 2,066 | 1,873 |
Sales And Marketing [Member]
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Stock-based compensation expense | 1,238 | 1,264 | 3,623 | 3,949 |
General And Administrative [Member]
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Stock-based compensation expense | $ 1,530 | $ 1,325 | $ 4,096 | $ 3,775 |