Property, Plant and Equipment - Schedule (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 813,761	$ 826,217
Accumulated depreciation	459,964	451,286
Net property, plant and equipment	353,797	374,931
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	73,980	74,797
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	231,219	223,761
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	472,407	494,024
Computer software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 36,155	$ 33,635

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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