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Accrued Warranty (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Product Warranties Disclosures [Abstract]    
Product warranty term 12 months  
Movement in Standard Product Warranty Accrual [Roll Forward]    
Beginning Balance $ 1,318 $ 1,300
Additions 1,777 1,442
Claims and reversals (2,229) (1,424)
Reclassified to current liabilities held for sale (150) 0
Ending Balance $ 716 $ 1,318