Income Taxes Tax rate reconciliation (Details) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
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	4.40%	1.90%	2.90%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other	(0.30%)	1.60%	0.70%
Valuation allowance reversal rate change	9.30%	0.00%	(84.20%)
Uncertain tax positions tax rate effect	(0.50%)	(0.10%)	(4.50%)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	2.60%	1.20%	1.30%
Effective Income Tax Rate Reconciliation, Other Adjustments	(1.70%)
Income Tax Reconciliation, Other Reconciling Items		$ 0.002	$ (0.010)
Effective Income Tax Rate, Continuing Operations	48.80%	39.80%	(49.80%)