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Property and Equipment, Net of Accumulated Depreciation and Amortization, by Geographic Areas (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Property and equipment, net of accumulated depreciation and amortization	$ 260,900	$ 266,608
United States
Segment Reporting Information [Line Items]
Property and equipment, net of accumulated depreciation and amortization	190,600	194,800
Europe
Segment Reporting Information [Line Items]
Property and equipment, net of accumulated depreciation and amortization	52,300	52,400
Japan
Segment Reporting Information [Line Items]
Property and equipment, net of accumulated depreciation and amortization	8,500	9,700
Other
Segment Reporting Information [Line Items]
Property and equipment, net of accumulated depreciation and amortization	$ 9,500	$ 9,700

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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