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Inventories - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Finished Goods $ 28,792 $ 27,770
Work in Progress 20,790 23,977
Raw Material 67,015 63,720
Total Inventory $ 116,597 $ 115,467