Fair Value (Details) (Recurring basis, USD $) In Thousands, unless otherwise specified	May 31, 2014	Nov. 30, 2013
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Marketable equity securities	$ 2,142	$ 2,208
Significant Observable Inputs (Level 2)
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Interest rate swap asset	38	63
Interest rate swap liabilities	$ 2,282	$ 2,285