Supplemental Financial Statement Information - Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Raw materials $ 91,073 $ 90,486
Work in process 101,464 105,739
Finished goods 160,523 170,960
Inventories, net $ 353,060 $ 367,185