Fair Value (Details) - USD ($) $ in Thousands	Aug. 31, 2015	Nov. 30, 2014
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Marketable equity securities	$ 2,562	$ 1,924
Interest rate swap liabilities	2,251	2,330
Recurring basis | Level 1
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Marketable equity securities	2,562	1,924
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		8
Interest rate swap liabilities	$ 2,251	$ 2,330