Fair Value (Details 2) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	Nov. 30, 2013
Financial assets:
Interest rate swap	$ 44
Financial liabilities:
Interest rate swaps	2,130
Carrying Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	16,490	14,179
Available-for-sale securities	1,916	2,208
Carrying Value | Significant Observable Inputs (Level 2)
Financial assets:
Interest rate swap	44	63
Financial liabilities:
Mortgage debt	70,673	66,708
Interest rate swaps	2,130	2,285
Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	16,490	14,179
Available-for-sale securities	1,916	2,208
Estimated Fair Value | Significant Observable Inputs (Level 2)
Financial assets:
Interest rate swap	44	63
Financial liabilities:
Mortgage debt	71,024	67,931
Interest rate swaps	$ 2,130	$ 2,285