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Income Taxes Income Tax Expense (Benefit) Reconciliation to Statutory Rate (Details)
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Income tax expense (benefit) reconciliation to statutory rate (Details) [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 2.90% 3.20% 2.90%
Effective Income Tax Rate Reconciliation, Deductions, Qualified Production Activities (3.10%) (2.90%) (2.70%)
Effective Income Tax Rate Reconciliation, Tax Contingencies (0.20%) (0.80%) 1.80%
Effective Income Tax Rate Reconciliation, Other Adjustments 0.30% (1.40%) 0.50%
Effective Income Tax Rate, Continuing Operations 34.90% 33.10% 37.50%