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Other Intangible Assets - Summary of Amortization Expense (Details) - USD ($)
$ in Thousands
Jun. 28, 2015
Dec. 31, 2014
Other intangible assets    
2015 $ 1,992  
2016 3,647  
2017 3,569  
2018 3,484  
2019 3,475  
Thereafter 17,778  
Total amortization expense $ 33,945 $ 35,902