Earnings Per Share (Detail)	3 Months Ended
Mar. 23, 2013	Mar. 24, 2012
Weighted Average Number of Shares, Contingently Issuable	52,000	184,000
Restricted Stock Units (RSUs) [Member]
Weighted Average Number of Shares, Contingently Issuable	47,000	79,000
Long.termincentiveplan LTIP [Member]
Weighted Average Number of Shares, Contingently Issuable	5,000	105,000

- Definition

Shares issuable for little or no cash consideration upon the satisfaction of certain conditions (contingently issuable shares) are considered outstanding common shares and included in the computation of basic Earnings Per Share as of the date that all necessary conditions have been satisfied (in essence, when issuance of the shares is no longer contingent). Outstanding common shares that are contingently returnable (that is, subject to recall) are treated in the same manner as contingently issuable shares. Contingently issuable shares include shares that (a) will be issued in the future upon the satisfaction of specified conditions, (b) have been placed in escrow and all or part must be returned if specified conditions are not met, or (c) have been issued but the holder must return all or part if specified conditions are not met. The number of contingently issuable shares is determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period.

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