Property, Plant and Equipment - Schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 522,217	$ 384,833
Accumulated depreciation	251,170	226,992
Net property, plant and equipment	271,047	157,841
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	59,176	30,047
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	141,510	101,252
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	303,867	235,715
Computer software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 17,664	$ 17,819