Reconciliation of Effective Tax Amount (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Income Tax Disclosure [Abstract]
Tax at U.S. federal income tax rate	$ 87,338	$ 102,560	$ 93,819
State income taxes, net of federal income tax benefit	7,266	8,556	7,698
Section 199 qualifying production activities benefit	(8,007)	(6,725)	(6,892)
Other	(836)	(551)	(2,310)
Income tax expense	$ 85,761	$ 103,840	$ 92,315

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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-Subparagraph (a),(b)
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Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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