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SEGMENT INFORMATION (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Revenue and long-lived assets by geography
Revenue	$ 640,600	$ 460,213
Long-lived assets (excluding goodwill and intangible assets)	255,701		259,588
United States
Revenue and long-lived assets by geography
Revenue	445,676	372,662
Long-lived assets (excluding goodwill and intangible assets)	242,082		246,550
All other countries
Revenue and long-lived assets by geography
Revenue	194,924	87,551
Long-lived assets (excluding goodwill and intangible assets)	$ 13,619		$ 13,038

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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