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Other Financial Statement Information - Property, Plant and Equipment - Net (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]    
Property and equipment - Gross $ 245,769 $ 231,229
Less accumulated depreciation 137,567 130,768
Property and equipment - Net 108,202 100,461
Land and Improvements [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment - Gross 15,452 12,141
Buildings and Improvements [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment - Gross 73,307 69,963
Machinery and Equipment [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment - Gross 148,676 141,940
Construction in Progress [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment - Gross $ 8,334 $ 7,185