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Other Comprehensive Income or Loss - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	4 Months Ended
	Apr. 19, 2014	Apr. 27, 2013
Statement Of Income And Comprehensive Income [Abstract]
Income loss reclassified from AOCI	$ 0.2	$ 0.1
Increase in selling general and administrative expenses	0.3	0.2
Decreased/Increased in income taxes	$ (0.1)	$ (0.1)

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- Definition

Increase In Selling General And Administrative Expenses

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No definition available.

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- Definition

Other Comprehensive Income Loss Reclassification Adjustment From AOCI Available For Sale Of Securities Tax

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No definition available.

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- Definition

The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets.

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No definition available.

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- Details

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