Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011 Y	Dec. 31, 2010
Property, plant and equipment, gross	$ 661,857	$ 595,368
Less: Accumulated depreciation and amortization	(290,065)	(249,704)
Property, plant and equipment, net	371,792	345,664
Land [Member]
Property, plant and equipment, gross	15,686	16,053
Buildings and improvements
Property, plant and equipment, gross	275,529	232,946
Estimated useful life minimum	1
Estimated useful life maximum	40
Machinery and equipment
Property, plant and equipment, gross	176,662	157,973
Estimated useful life minimum	1
Estimated useful life maximum	15
Computer software
Property, plant and equipment, gross	65,344	53,948
Estimated useful life minimum	1
Estimated useful life maximum	10
Furniture and office equipment
Property, plant and equipment, gross	76,809	75,030
Estimated useful life minimum	1
Estimated useful life maximum	15
Construction in Progress [Member]
Property, plant and equipment, gross	$ 51,827	$ 59,418

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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