Inventories (Components of Inventories) (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials and component parts	$ 166,205	$ 141,671
Work in process	37,001	32,387
Finished goods	72,807	65,066
Total	$ 276,013	$ 239,124