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Inventory (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Inventory [Line Items]    
Raw materials $ 28,538 $ 26,379
Work in process 14,305 14,341
Finished goods 21,149 [1] 24,188 [1]
Inventories $ 63,992 $ 64,908
[1] Finished goods inventory at customer vendor managed inventory locations was $8.2 million and $5.4 million as of June 30, 2014 and December 31, 2013, respectively.