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Other Financial Statement Information - Inventories - Net (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Inventory Disclosure [Abstract]    
Finished products $ 34,836 $ 41,474
Work-in-process 7,700 7,940
Raw materials 43,623 46,133
Inventory, gross 86,159 95,547
Excess of current cost over LIFO cost (4,825) (4,674)
Noncurrent portion of inventory (7,404) (3,957)
Inventory - net $ 73,930 $ 86,916