Investments in Unconsolidated Joint Ventures (Information for Investments in Unconsolidated Joint Ventures) (Details) $ in Thousands		9 Months Ended
		Aug. 31, 2018 USD ($) lot joint_venture	Nov. 30, 2017 USD ($) lot joint_venture
Schedule of Equity Method Investments [Line Items]
Number of Units in Real Estate Property | lot		46
Long-term Purchase, Commitment, Amount | $		$ 21,100
Number of investments in unconsolidated joint ventures | joint_venture		6	7
Long-term purchase commitment period		2 years
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $		$ 62,436	$ 64,794
Number of Unconsolidated Joint Venture Lots Controlled Under Land Option Contracts | lot		46	377
Equity Method Investments Summarized Financial Information Debt | $	[1]	$ 11,407	$ 20,040
Investments in Unconsolidated Joint Ventures with Debt
Schedule of Equity Method Investments [Line Items]
Number of investments in unconsolidated joint ventures | joint_venture			2
Investments in Unconsolidated Joint Ventures with Purchase Commitments [Member]
Schedule of Equity Method Investments [Line Items]
Number of investments in unconsolidated joint ventures | joint_venture		1

[1] As of November 30, 2017, two of our unconsolidated joint ventures had separate construction loan agreements with different third-party lenders to finance their respective land development activities, with the outstanding debt secured by the corresponding underlying property and related project assets and non-recourse to us. The secured debt of one of these unconsolidated joint ventures was repaid in August 2018 upon maturity. All of the outstanding secured debt at August 31, 2018 is scheduled to mature in February 2020. None of our other unconsolidated joint ventures had outstanding debt at August 31, 2018 or November 30, 2017.