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Goodwill and Other Intangible Assets - Future Amortization (Details) - USD ($)
$ in Thousands
Jun. 28, 2015
Dec. 28, 2014
Acquired Finite-Lived Intangible Assets [Line Items]    
Total $ 16,166 $ 16,760
Patents and Purchased Technology [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
2015 1,269  
2016 2,114  
2017 1,989  
2018 1,989  
2019 1,989  
Thereafter 3,116  
Total 12,466  
Other Intangible Assets [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Total $ 375