Quarterly report pursuant to Section 13 or 15(d)

Inventories - Summary of Inventories (Details)

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Inventories - Summary of Inventories (Details) - USD ($)
$ in Thousands
Jul. 01, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Finished Goods $ 31,140 $ 28,792
Work in Progress 27,888 20,790
Raw Material 75,395 67,015
Inventory, net $ 134,423 $ 116,597