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Difference Between US Federal Statutory Tax Rate and consolidated Effective Tax Rate (Detail)	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Reconciliation of Statutory Federal Tax Rate [Line Items]
US federal statutory rate	35.00%	35.00%	35.00%
States income taxes (net of federal benefit)	3.80%	1.30%	2.70%
Reserves for uncertain tax positions	3.50%	0.40%	(0.10%)
Foreign taxes	(0.40%)	(0.60%)	0.40%
(Decrease) increase in valuation allowance	(2.20%)	1.70%	0.90%
Loss on closure of China	0.00%	(2.10%)	0.00%
Other	1.40%	0.20%	0.10%
Effective tax rate	41.10%	35.90%	39.00%

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- Definition

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

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage 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 changes in the valuation allowance for deferred tax assets.

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Percentage 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 disposition of a business not qualifying as a discontinued operation.

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Percentage 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 foreign tax credit.

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Effective Income Tax Rate Reconciliation, Uncertain Tax Positions

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Reconciliation of Statutory Federal Tax Rate [Line Items]

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