v2.4.0.8
Property, Plant and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2013
Components of property, plant and equipment      
Land $ 22,415 $ 21,801 $ 23,348
Land improvements and leasehold improvements 68,976 67,153 67,262
Buildings and storage facilities 238,664 231,976 224,913
Machinery and equipment 320,648 308,215 299,874
Software 55,791 13,351 13,558
Construction in progress 28,260 48,135 54,713
Property, plant and equipment, gross 734,754 690,631 683,668
Less: accumulated depreciation and amortization 332,954 303,173 303,294
Property, plant and equipment, net $ 401,800 $ 387,458 $ 380,374