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Other Assets (Details) - USD ($)
$ in Thousands
May. 31, 2015
Nov. 30, 2014
Other Assets [Abstract]    
Cash surrender value of insurance contracts $ 70,675 $ 70,571
Debt issuance costs 27,247 27,082
Property and equipment, net 11,775 11,831
Prepaid expenses 8,048 5,431
Total $ 117,745 $ 114,915