SEGMENT INFORMATION - Summary of Property and Equipment by Major Country (Details) (USD $) In Thousands, unless otherwise specified	May 31, 2014	Nov. 30, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 107,904	$ 101,050
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	92,618	88,669
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	2,137	1,568
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 13,149	$ 10,813