Fair Value Disclosures (Assets Measured at Fair Value on Nonrecurring Basis) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
		Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2018	Aug. 31, 2017	Nov. 30, 2017
Assets measured at fair value on a nonrecurring basis
Impairment of Real Estate		$ (7,135)	$ (7,094)	$ (17,827)	$ (14,613)
Fair Value, Measurements, Nonrecurring [Member] | Level 3
Assets measured at fair value on a nonrecurring basis
Assets, Fair Value Disclosure	[1]	31,744		31,744		$ 38,357
Inventory Impacted by Pretax Noncash Inventory Impairment Charges, Carrying Value		$ 49,571		49,571		58,962
Impairment of Real Estate				$ (17,827)		$ (20,605)

[1] Amounts represent the aggregate fair value for real estate assets impacted by inventory impairment charges during the applicable period as of the date the fair value measurements were made. The carrying value for these real estate assets may have subsequently increased or decreased from the fair value reflected due to activity that has occurred since the measurement date.