Fair Value (Details) - USD ($) $ in Thousands	Aug. 31, 2016	Nov. 30, 2015
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Marketable equity securities	$ 1,058	$ 1,970
Interest rate swap agreements	4,639	2,766
Recurring basis | Level 1
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Marketable equity securities	1,058
Interest rate swap agreements		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 agreements	$ 4,639	$ 2,766