Fair Value Disclosures (Assets Measured at Fair Value on Nonrecurring Basis) (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands, unless otherwise specified	Aug. 31, 2014		Nov. 30, 2013
Assets measured at fair value on a nonrecurring basis
Assets, Fair Value Disclosure	$ 6,421		$ 1,143
Level 2
Assets measured at fair value on a nonrecurring basis
Assets, Fair Value Disclosure	6,421	[1]	0	[1]
Level 3
Assets measured at fair value on a nonrecurring basis
Assets, Fair Value Disclosure	$ 0	[1]	$ 1,143	[1]

[1] Amounts represent the aggregate fair value for communities or land parcels where we recognized inventory impairment charges during the period, as of the date that the fair value measurements were made. The carrying value for these communities or land parcels may have subsequently increased or decreased from the fair value reflected due to activity that has occurred since the measurement date.