Property, Plant And Equipment (Property, Plant And Equipment, Presented Net Of Accumulated Depreciation) (Detail) (Restated [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Computer hardware and software	$ 257,924	$ 259,697
Less-Accumulated depreciation	(80,333)	(69,221)
Less-Accumulated depreciation of leases	(931)	(596)
Total	176,660	189,880
Land and Building [Member]
Property, Plant and Equipment [Line Items]
Computer hardware and software	102,615	109,660
Equipment [Member]
Property, Plant and Equipment [Line Items]
Computer hardware and software	111,144	116,444
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Computer hardware and software	15,671	15,884
Assets Leased to Others [Member]
Property, Plant and Equipment [Line Items]
Computer hardware and software	3,008	2,915
Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Computer hardware and software	$ 25,486	$ 14,794

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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- Definition

Gross amount 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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- Definition

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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