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Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 07, 2014	Sep. 08, 2013	Sep. 07, 2014	Sep. 08, 2013
Earnings Per Share [Abstract]
Net income available to common stockholders - basic and diluted	$ 35,618	$ 30,632	$ 114,554	$ 98,322
Basic weighted average number of shares	54,620,539	55,065,450	54,949,257	55,427,070
Earnings per share - basic	$ 0.65	$ 0.56	$ 2.08	$ 1.77
Weighted average diluted number of shares	56,610,608	57,345,677	57,030,669	57,831,660
Earnings per share - diluted	$ 0.63	$ 0.53	$ 2.01	$ 1.70

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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