Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets (Details 2)

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Goodwill and Intangible Assets (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 25, 2016
Estimated aggregate future amortization expense    
2018 $ 4,202  
2019 4,154  
2020 3,638  
2021 3,183  
2022 2,743  
Thereafter 12,865  
Net Carrying Amount $ 30,785 $ 35,523