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Property Plant and Equipment, Net (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 89,346 $ 84,776
Accumulated depreciation (56,856) (52,438)
Net property, plant and equipment 32,490 32,338
Land, Buildings and Improvements
   
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 38,591 38,955
Machinery and Equipment
   
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 50,755 $ 45,821