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Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
Income Taxes (Details) (USD $)	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Income Tax Expense (Benefit) [Abstract]
Effective Income Tax Rate, Continuing Operations	40.60%	(11.90%)	40.30%	(17.00%)
Income Tax Expense (Benefit)	$ 15,448,000	$ (4,770,000)	$ 11,067,000	$ (4,705,000)
Valuation Allowance, Deferred Tax Asset, Change in Amount				15,700,000
Deferred Tax Assets, Valuation Allowance	$ 1,700,000		$ 1,700,000

The sum of the portions of deferred tax assets as of the balance sheet date for which, based on the weight of available evidence, it is more likely than not will not be realized through future reductions of tax-based income.

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- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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- Definition

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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