Income Taxes Tax rate reconciliation (Details)	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	4.50%	5.60%	4.40%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other	(0.50%)	1.40%	(0.30%)
Valuation allowance reversal rate change	0.70%	47.50%	9.30%
Uncertain tax positions tax rate effect	(1.60%)	(23.70%)	(0.50%)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	0.90%	(3.70%)	2.60%
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent	(1.00%)	(10.20%)	(2.30%)
Effective Income Tax Rate Reconciliation, Other Adjustments	0.00%	(0.60%)	0.60%
Effective Income Tax Rate, Continuing Operations	38.00%	51.30%	48.80%