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, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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Property, Plant and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 1,140,884	$ 941,716
Less: Accumulated depreciation	549,439	518,611
Property, plant and equipment, net	591,445	423,105	439,620
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	45,840	40,032
Building and building improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	372,156	304,341
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	680,240	576,704
Construction in progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 42,648	$ 20,639