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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. 29, 2013
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Sep. 30, 2012
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Sep. 29, 2013
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Sep. 30, 2012
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock-based compensation expense | $ 4,511 | $ 4,019 | $ 12,492 | $ 10,806 |
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Cost Of Revenue [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock-based compensation expense | 479 | 473 | 1,074 | 1,021 |
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Research And Development [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock-based compensation expense | 1,047 | 778 | 2,854 | 2,066 |
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Sales And Marketing [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock-based compensation expense | 1,331 | 1,238 | 3,871 | 3,623 |
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General And Administrative [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock-based compensation expense | $ 1,654 | $ 1,530 | $ 4,693 | $ 4,096 |