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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Commitments      
Rental expense under operating leases $ 3,500 $ 2,800 $ 2,600
Loss Contingency [Abstract]      
Maximum period for purchase commitments for certain ingredients, packaging materials and energy 12 months    
Minimum rental commitments under non-cancellable operating leases      
2017 $ 2,313    
2018 1,746    
2019 1,660    
2020 1,444    
2021 1,253    
Thereafter 6,770    
Total $ 15,186    
License Agreement for Sheeting and Frying Process Technology [Member]      
Commitments      
Threshold percentage of sales decline due to availability of similar product, for release from royalty obligations 10.00%    
License Agreement with Seattles Best Coffee LLC [Member]      
Commitments      
Extension period of license subject to meeting of certain sales targets 5 years