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Domestic and Foreign Long-Lived Assets (Property, Plant and Equipment, Net) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 148,905	$ 175,567
United States
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	140,700	166,800
Foreign
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 8,200	$ 8,800

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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