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Inventory - Components of Inventory (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials $ 40,461 $ 34,223
Work in process 4,003 2,893
Finished goods 60,653 54,417
Total Inventory, net $ 105,117 $ 91,533