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Segment Information (Summary Of Property And Equipment By Major Country) (Details) (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2013
Nov. 30, 2012
Segment Reporting Information [Line Items]    
Property and equipment, net $ 101,050 $ 98,474
United States
   
Segment Reporting Information [Line Items]    
Property and equipment, net 88,669 83,516
United Kingdom
   
Segment Reporting Information [Line Items]    
Property and equipment, net 1,568 1,191
Other
   
Segment Reporting Information [Line Items]    
Property and equipment, net $ 10,813 $ 13,767