Income Taxes Income Tax Expense (Benefit) Reconciliation to Statutory Rate (Details)	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Income Tax Disclosure [Abstract]
Statutory federal income tax	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	2.50%	3.00%	2.90%
Manufacturing deduction	(3.30%)	(3.20%)	(3.10%)
Changes in unrecognized tax benefits	0.30%	0.30%	(0.20%)
Other	(1.10%)	(1.10%)	0.30%
Effective income tax rate	33.40%	34.00%	34.90%

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 deduction for qualified production activity.

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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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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