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Income Taxes (Detail) (USD $)	3 Months Ended
Income Taxes (Detail) (USD $)	Mar. 23, 2013	Mar. 24, 2012
Income Tax Expense (Benefit)	$ 906,000	$ 3,615,000
Effective Income Tax Rate, Continuing Operations	30.50%	39.90%
Unrecognized Tax Benefits	2,000,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	300,000
Income Tax Examination, Penalties and Interest Accrued	$ 100,000

- 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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