Schedule of Income Taxes Calculated on Income from Continuing Operations Before Income Taxes and Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Income Tax Disclosure [Line Items]
Income taxes at federal income tax rate	$ 83,565	$ 77,418	$ 60,683
State income taxes, net of federal income tax benefit	7,201	4,532	3,260
Meals and entertainment exclusion	946	777	919
Share-based payments	(61)	(239)	184
Other, net	(583)	(102)	(589)
Income taxes	$ 91,068	$ 82,386	$ 64,457

Income Tax Disclosure [Line Items]

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Subparagraph 2
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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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