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Guarantees and Other Commitments and Contingencies Other Loan Guarantees (Details)
CAD in Thousands, $ in Thousands
Jan. 03, 2016
USD ($)
yr
Dec. 28, 2014
CAD
Dec. 30, 2012
USD ($)
New store development and equipment financing [Member]      
Guarantor Obligations [Line Items]      
Guarantor Obligations, Maximum Exposure, Undiscounted $ 7,993    
New store development and equipment financing [Member] | Other Liabilities [Member]      
Guarantor Obligations [Line Items]      
Guarantor Obligations, Current Carrying Value 686    
Guarantee of Indebtedness of Others [Member]      
Guarantor Obligations [Line Items]      
Guarantor Obligations, Maximum Exposure, Undiscounted $ 1,501   $ 2,000
Guarantee Obligations, Reduction Period | yr 5    
Guarantor Obligations, Current Carrying Value $ 165    
Canada, Dollars | Guarantee of Indebtedness of Others [Member] | Other Liabilities [Member]      
Guarantor Obligations [Line Items]      
Guarantor Obligations, Maximum Exposure, Undiscounted | CAD   CAD 2,300