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GEOGRAPHIC INFORMATION (Information by Geographic Area, Long-Lived Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 1,226,314	$ 1,217,718
UNITED STATES
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	1,220,600	1,211,795
CANADA
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	292	324
Europe [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	315	155
Central And South America [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	3,461	3,638
Other Countries [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 1,646	$ 1,806

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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