Income Taxes (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Income Tax Expense (Benefit) [Abstract]
Effective Income Tax Rate, Continuing Operations	51.30%	39.40%	44.80%	40.00%
Income Tax Benefit	$ 6,677,000	$ 6,682,000	$ 15,956,000	$ 17,749,000
Deferred Tax Assets, Tax Credit Carryforwards	4,300,000		4,300,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	2,400,000
Valuation Allowance, Amount	$ 1,500,000		$ 1,500,000
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance	11.80%		4.30%

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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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 cumulative amount of future tax effects arising from the unused tax credit carryforward that cannot be utilized on the tax return during a year that may be carried forward to reduce taxable income or taxes payable in a future year; a tax credit carryforward is the amount by which tax credits available for utilization exceed statutory limitations.

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- Definition

The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

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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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