Leases (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Aug. 31, 2021		Aug. 31, 2020	Aug. 31, 2021		Aug. 31, 2020	Nov. 30, 2020		Dec. 01, 2019
Lease, Cost		$ 4,300		$ 4,200	$ 12,900		$ 13,600
Lessee, Operating Lease, Liability, to be Paid, Year One		2,962			2,962
Lease right-of-use assets	[1]	30,112			30,112			$ 36,270
Operating Lease, Liability		32,011	[2]		32,011	[2]		$ 38,000	[2]	$ 0
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		18		2,977	1,517		9,045
Operating Lease, Payments		$ 2,979		2,831	$ 8,648		8,468
Operating Lease, Weighted Average Remaining Lease Term		4 years			4 years			4 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent		5.10%			5.10%			5.10%
Lessee, Operating Lease, Liability, to be Paid, Year Two		$ 10,549			$ 10,549
Lessee, Operating Lease, Liability, to be Paid, Year Three		8,280			8,280
Lessee, Operating Lease, Liability, to be Paid, Year Four		6,139			6,139
Lessee, Operating Lease, Liability, to be Paid, Year Five		4,503			4,503
Lessee, Operating Lease, Liability, to be Paid, after Year Five		3,112			3,112
Lessee, Operating Lease, Liability, to be Paid		35,545			35,545
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		(3,534)			(3,534)
Short-term Lease, Cost		1,200		$ 1,100	3,700		$ 4,800
Home Building [Member]
Lease right-of-use assets		29,896			29,896			$ 35,967
Operating Lease, Liability		31,773			31,773			37,668
Financial Service [Member]
Lease right-of-use assets		200			200			300
Operating Lease, Liability		$ 200			$ 200			$ 300

[1] Represents lease right-of-use assets within our homebuilding operations and financial services operations of $29.9 million and $.2 million, respectively, at August 31, 2021, and $36.0 million and $.3 million, respectively, at November 30, 2020

[2] Represents lease liabilities within our homebuilding operations and financial services operations of $31.8 million and $.2 million, respectively, at August 31, 2021, and $37.7 million and $.3 million, respectively, at November 30, 2020.