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Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share for Continuing Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	4 Months Ended
	Apr. 19, 2014	Apr. 27, 2013
Numerator:
Earnings from continuing operations	$ 12,519	$ 8,912
Adjustment for earnings attributable to participating securities	(232)	(225)
Earnings from continuing operations used in calculating earnings per share	$ 12,287	$ 8,687
Denominator:
Weighted average shares outstanding, including participating securities	37,600	21,750
Adjustment for participating securities	(697)	(548)
Shares used in calculating basic earnings per share	36,903	21,202
Effect of dilutive stock options	118	77
Shares used in calculating diluted earnings per share	37,021	21,279
Basic earnings per share from continuing operations	$ 0.33	$ 0.41
Diluted earnings per share from continuing operations	$ 0.33	$ 0.41

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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