Income Taxes (Deferred Tax Assets, Net) (Details) - USD ($) $ in Thousands	Nov. 30, 2020	Nov. 30, 2019
Deferred tax liabilities
Capitalized expenses	$ 43,439	$ 43,818
State taxes	22,562	26,290
Depreciation and amortization	2,714	0
Other	2,884	4,132
Total	71,599	74,240
Deferred tax assets:
NOLs from 2006 through 2018	79,987	95,562
Tax credits	75,108	180,737
Employee benefits	52,713	53,294
Warranty, legal and other accruals	41,319	40,954
Inventory impairment and land option contract abandonment charges	40,998	48,862
Capitalized expenses	19,903	25,116
Partnerships and joint ventures	8,733	9,990
Depreciation and amortization	0	479
Other	1,905	2,939
Total	320,666	457,933
Valuation allowance	(18,000)	(19,200)
Total	302,666	438,733
Deferred Tax Assets, Net	$ 231,067	$ 364,493

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