Calculation of Earnings Per Share (Detail) (As Restated [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 25, 2012		Mar. 27, 2011
As Restated [Member]
Basic earnings per common share:
Net income, net of redeemable noncontrolling interests	$ 16,981	[1]	$ 15,976	[1]
Weighted average shares outstanding	24,053		25,484
Basic earnings per common share	$ 0.71		$ 0.63
Earnings per common share - assuming dilution:
Net income, net of redeemable noncontrolling interests	$ 16,981	[1]	$ 15,976	[1]
Weighted average shares outstanding	24,053		25,484
Dilutive effect of outstanding equity awards	385		273
Diluted weighted average shares outstanding	24,438		25,757
Earnings per common share - assuming dilution	$ 0.69		$ 0.62

[1] Net income at March 25, 2012 and March 27, 2011 is net of $1,326 and $1,122, respectively, allocable to the redeemable noncontrolling interests for our joint venture arrangements.