Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment (Detail)

v2.4.0.6
Property, Plant and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Minimum
Dec. 31, 2012
Maximum
Dec. 31, 2012
Building
Dec. 31, 2012
Machinery and Equipment
Minimum
Dec. 31, 2012
Machinery and Equipment
Maximum
Dec. 31, 2012
Furniture and Fixtures
Minimum
Dec. 31, 2012
Furniture and Fixtures
Maximum
Dec. 31, 2012
Transportation Equipment
Minimum
Dec. 31, 2012
Transportation Equipment
Maximum
Dec. 31, 2012
Improvements
Property, Plant and Equipment [Line Items]                        
Land $ 10,463 $ 10,463                    
Buildings 60,729 59,257                    
Machinery and equipment 198,571 187,065                    
Furniture and fixtures 4,928 4,601                    
Transportation equipment 3,139 3,164                    
Improvements 95,874 84,828                    
Construction in progress 20,397 11,288                    
Property, plant and equipment 394,101 360,666                    
Less accumulated depreciation 164,885 143,944                    
Property, plant and equipment, Net $ 229,216 $ 216,722                    
Property, plant and equipment, estimated useful life     3 years 25 years 25 years 3 years 25 years 3 years 5 years 3 years 5 years 15 years