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Inventories (Components of Inventories) (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials and component parts $ 145,467 $ 133,470
Work in process 43,058 41,895
Finished goods 65,657 55,602
Total $ 254,182 $ 230,967