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Summary of Significant Accounting Policies (Details 5) (USD $)
In Thousands, unless otherwise specified
Sep. 29, 2012
Dec. 31, 2011
Future estimated amortization expense    
2012 (three months) $ 89  
2013 242  
2014 107  
2015 16  
2016 16  
Thereafter 132  
Total $ 602 $ 745