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Inventories - Major Classes of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Raw materials $ 92,929 $ 106,955
Work-in-process 27,730 31,611
Finished goods 97,814 121,655
Gross inventories 218,473 260,221
Excess and obsolete reserves (22,531) (31,823)
Net inventories $ 195,942 $ 228,398