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Other Assets (Details) - USD ($)
$ in Thousands
Aug. 31, 2017
Nov. 30, 2016
Other Assets [Abstract]    
Cash surrender value of corporate-owned life insurance contracts $ 73,983 $ 70,829
Property and equipment, net 18,718 14,240
Prepaid expenses 7,150 4,894
Debt issuance costs associated with unsecured revolving credit facility 2,543 1,182
Total $ 102,394 $ 91,145