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Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 19, 2016	Jun. 14, 2015	Jun. 19, 2016	Jun. 14, 2015
Earnings Per Share [Abstract]
Net income available to common stockholders - basic and diluted	$ 49,261	$ 45,909	$ 94,712	$ 92,198
Basic weighted average number of shares	49,213,330	54,833,094	49,455,412	55,020,404
Earnings per share - basic	$ 1.00	$ 0.84	$ 1.92	$ 1.68
Diluted weighted average number of shares	50,459,754	56,628,237	50,846,941	56,820,743
Earnings per share - diluted	$ 0.98	$ 0.81	$ 1.86	$ 1.62

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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