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Intangible Assets Intangible Assets - Future Amortization Expense (Details) - USD ($)
$ in Thousands
Apr. 01, 2017
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
2017 $ 5,236  
2018 4,575  
2019 3,557  
2020 3,217  
2021 2,541  
Thereafter 9,665  
Intangible assets, net $ 28,791 $ 29,376