Investments in Unconsolidated Joint Ventures (Financial Information for Unconsolidated Joint Ventures) (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Aug. 31, 2022 USD ($) joint_venture home	Aug. 31, 2021 USD ($)	Aug. 31, 2022 USD ($) joint_venture home	Aug. 31, 2021 USD ($)	May 31, 2022 USD ($)	Nov. 30, 2021 USD ($) home joint_venture	May 31, 2021 USD ($)	Nov. 30, 2020 USD ($)
Assets
Total assets		$ 6,730,589		$ 6,730,589			$ 5,835,918
Liabilities and equity
Equity		3,490,608	$ 2,841,733	3,490,608	$ 2,841,733	$ 3,290,995	3,019,475	$ 2,886,865	$ 2,665,769
Total liabilities and stockholders’ equity		$ 6,730,589		$ 6,730,589			$ 5,835,918
Number of investments in unconsolidated joint ventures | joint_venture		6		6			6
Number of joint ventures with funding commitments | joint_venture		1		1
Number of other unconsolidated joint ventures with outstanding debt | home		0		0			0
Cash and Cash Equivalents, at Carrying Value		$ 197,257	351,345	$ 197,257	351,345
Financial Service [Member]
Assets
Other Assets	[1]	26,473		26,473			$ 24,347
Total assets		56,522		56,522			44,202
Liabilities and equity
Cash and Cash Equivalents, at Carrying Value		1,855	1,204	1,855	1,204		1,372
Home Building [Member]
Assets
Other Assets		108,286		108,286			104,153
Total assets		6,674,067		6,674,067			5,791,716
Liabilities and equity
Cash and Cash Equivalents, at Carrying Value		195,402	350,141	195,402	350,141		290,764
Interest Rate Lock Commitments | Financial Service [Member]
Liabilities and equity
Derivative Asset, Notional Amount		36,600		36,600			9,500
Change in fair value included in gain on sale of mortgage loans held for sale		6,300	500	27,100	2,100
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Financial Service [Member]
Statements of operations of unconsolidated joint venture
Revenues		19,857	31,560	100,057	96,930
Other Nonoperating Income (Expense)		(19,601)	(20,712)	(59,888)	(60,085)
Income (loss)		256	10,848	40,169	36,845
Assets
Mortgages Held-for-sale, Fair Value Disclosure		138,253		138,253			234,669
Other Assets		61,094		61,094			46,218
Total assets		220,440		220,440			304,803
Liabilities and equity
Accounts payable and other liabilities		16,429		16,429			18,375
Funding facilities		152,079		152,079			253,791
Equity		51,932		51,932			32,637
Total liabilities and stockholders’ equity		220,440		220,440			304,803
Cash and Cash Equivalents, at Carrying Value		21,093		21,093			23,916
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Home Building [Member]
Statements of operations of unconsolidated joint venture
Revenues		1,293	1,979	5,251	14,818
Cost of Revenue		(801)	(1,453)	(3,872)	(12,397)
Other Nonoperating Income (Expense)		(666)	(591)	(2,014)	(2,000)
Income (loss)		(174)	$ (65)	(635)	$ 421
Assets
Receivables		3,279		3,279			795
Inventory, Real Estate		111,067		111,067			64,034
Other Assets		680		680			50
Total assets		132,620		132,620			80,610
Liabilities and equity
Accounts payable and other liabilities		13,556		13,556			12,285
Notes Payable	[2]	30,735		30,735			0
Equity		88,329		88,329			68,325
Total liabilities and stockholders’ equity		132,620		132,620			80,610
Cash and Cash Equivalents, at Carrying Value		17,594		17,594			$ 15,731
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Unsecured revolving credit facility
Liabilities and equity
Unsecured revolving credit facility, borrowing capacity		$ 62,000		$ 62,000
Unsecured revolving credit facility, expiration date		Apr. 19, 2026

[1] Other assets at August 31, 2022 and November 30, 2021 included $26.3 million and $24.1 million, respectively, of contract assets for estimated future renewal commissions.

[2] As of August 31, 2022, one of our unconsolidated joint ventures had borrowings outstanding under a revolving line of credit it entered into with a third-party lender in April 2022 to finance its land acquisition, development and construction activities. Borrowings under this line of credit, which has a maximum commitment of $62.0 million, are secured by the underlying property and related project assets. The line of credit is scheduled to mature on April 19, 2026, unless extended or terminated pursuant to its applicable terms. None of our other unconsolidated joint ventures had outstanding debt at August 31, 2022 or November 30, 2021