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Earnings Per Share - Additional Information (Detail)	3 Months Ended		6 Months Ended
Earnings Per Share - Additional Information (Detail)	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Earnings Per Share Disclosure [Line Items]
Stock options to purchase share of common stock excluded from calculation of diluted earnings per share because they were antidilutive	152,000	2,000	152,000	2,000

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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