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Warranty Costs (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 30, 2013
Dec. 29, 2012
Warranty Costs [Line Items]    
Accrued warranty costs, current $ 0.4 $ 0.4
Accessories [Member]
   
Warranty Costs [Line Items]    
Product warranty period 1 year  
Timepieces [Member]
   
Warranty Costs [Line Items]    
Product warranty period 2 years