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Segment Information (Summary Of Property And Equipment By Major Country) (Details) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2012	Nov. 30, 2011
Segment Reporting Information [Line Items]
Property and equipment, net	$ 98,474	$ 89,871
United States
Segment Reporting Information [Line Items]
Property and equipment, net	83,516	83,500
United Kingdom
Segment Reporting Information [Line Items]
Property and equipment, net	1,191	1,386
Other
Segment Reporting Information [Line Items]
Property and equipment, net	$ 13,767	$ 4,985

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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