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Goodwill and Intangible Assets - Future Amortization (Details) - USD ($)
$ in Thousands
Mar. 26, 2016
Dec. 26, 2015
Estimated future amortization expense    
2016 (remaining nine months) $ 1,013  
2017 206  
2018 140  
2019 66  
Thereafter 0  
Finite lived intangible assets, Net carrying amount $ 1,425 $ 1,867