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Line of Credit and Debt Obligations (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 29, 2013
Dec. 29, 2012
Line of Credit    
Balance on line of credit $ 0 $ 0
Debt Obligations    
Milpitas building mortgage 4,846 5,302
Total debt obligations 4,846 5,302
Current portion of debt obligations (4,846) (928)
Long-term debt obligations $ 0 $ 4,374