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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+ Details

Earning Per Share - Additional Information (Detail)	3 Months Ended		9 Months Ended
Earning Per Share - Additional Information (Detail)	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 01, 2011
Earnings Per Share Disclosure [Line Items]
Anti-dilutive shares excluded from computation of diluted earnings per share (EPS)