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Inventories (Components of Inventories) (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials and component parts $ 163,207 $ 141,671
Work in process 36,008 32,387
Finished goods 79,015 65,066
Total $ 278,230 $ 239,124