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Inventory (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Inventory [Line Items]    
Raw materials $ 27,876 $ 26,379
Work in process 22,844 14,341
Finished goods 17,229 [1] 24,188 [1]
Inventories $ 67,949 $ 64,908
[1] Finished goods inventory at customer vendor managed inventory locations was $4.9 million and $5.4 million as of March 31, 2014 and December 31, 2013, respectively.