Other Assets (Details) - USD ($) $ in Thousands	May 31, 2017	Nov. 30, 2016
Other Assets [Abstract]
Cash surrender value of corporate-owned life insurance contracts	$ 73,505	$ 70,829
Property and equipment, net	16,831	14,240
Prepaid expenses	8,699	4,894
Debt issuance costs associated with unsecured revolving credit facility, net	961	1,182
Total	$ 99,996	$ 91,145