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Significant Accounting Policies (Details 3) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Goodwill [Roll Forward]    
Goodwill $ 1,120 $ 1,120
Impairment charge (1,082) 0
Goodwill $ 38 $ 1,120