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Other Financial Statement Information - Inventories - Net (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Finished products $ 43,909 $ 37,301
Work-in-process 8,674 7,779
Raw materials 38,850 40,251
Inventory, gross 91,433 85,331
Excess of current cost over LIFO cost (4,092) (4,146)
Noncurrent portion of inventory (7,703) (7,350)
Inventories - net $ 79,638 $ 73,835