Fair Value (Details) - USD ($) $ in Thousands	Nov. 30, 2016	Nov. 30, 2015
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Marketable equity securities	$ 977	$ 1,970
Interest rate swap agreements	1,685
Recurring basis | Level 1
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Marketable equity securities	977	1,970
Recurring basis | Level 2
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Interest rate swap asset	207
Interest rate swap agreements	$ 1,892	$ 2,766