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Income Taxes (Narrative) (Details) (USD $)
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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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| Income Tax Disclosure [Abstract] | ||||
| Income tax provision | $ 10,364,000 | $ 9,920,000 | $ 26,053,000 | $ 30,418,000 |
| Provision for income taxes (in percentage) | 41.80% | 29.40% | 37.30% | 30.20% |
| Non recurring tax benefits (expenses), related to changes in estimates | 780,000 | |||
| Income Tax Reconciliation, Tax Credits, Research | 822,000 | |||
| Possible reduction in liabilities for uncertain tax positions | $ 5,500,000 | $ 5,500,000 | ||
| X | ||||||||||
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- Definition
Non recurring tax benefits (expenses) related to changes in estimates associated with tax returns No definition available.
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| X | ||||||||||
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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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