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Domestic and Foreign Long-Lived Assets (Property, Plant and Equipment, Net) (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net (Note 1)	$ 146,689	$ 148,905
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net (Note 1)	138,400	140,700
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net (Note 1)	$ 8,300	$ 8,200

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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