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Weighted-Average Shares - Additional Information (Detail)	3 Months Ended
	Apr. 05, 2015	Mar. 30, 2014
Earnings Per Share [Abstract]
Stock options to purchase anti-dilutive common stock	2,263,787	585,208

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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