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Summary of Significant Accounting Policies Property and Equipment (Details)
 12 Months Ended
Dec. 28, 2013
Jan. 03, 2015
Building [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life, Minimum 25 years  
Minimum [Member] | Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life, Minimum 3 years  
Minimum [Member] | Software [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life, Minimum 3 years  
Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Leasehold Improvements, Useful Life   10wmar_LeaseholdImprovementsUsefulLife
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Maximum [Member] | Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life, Minimum 7 years  
Maximum [Member] | Software [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life, Minimum 7 years