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Segment Information Property, Plant, and Equipment By Location (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	$ 262,670	$ 299,242	$ 318,217
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	107,153	115,499	116,081
Outside United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	$ 155,517	$ 183,743	$ 202,136

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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