Legal Matters (Details) $ in Millions	9 Months Ended
	Aug. 31, 2017 USD ($) a
Nevada Development Contract Litigation
Loss Contingencies [Line Items]
Acres of purchased land by LVDA | a	83
San Diego Region (Basin Plan) [Domain]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded to Other Party	$ 0.3
Northern California Townhome Community [Member]
Loss Contingencies [Line Items]
Expected compensatory damages	$ 100.0