Income Taxes (Deferred Tax Assets, Net) (Details) - USD ($) $ in Thousands	Nov. 30, 2018	Nov. 30, 2017
Deferred tax liabilities
Capitalized expenses	$ 51,660	$ 98,147
State taxes	31,246	59,174
Other	225	313
Total	83,131	157,634
Deferred tax assets:
NOLs from 2006 through 2018	121,432	236,273
Tax credits	231,100	208,841
Inventory impairment and land option contract abandonment charges	67,416	139,737
Employee benefits	45,802	100,200
Warranty, legal and other accruals	43,213	60,238
Capitalized expenses	27,894	39,195
Partnerships and joint ventures	6,368	14,784
Depreciation and amortization	1,869	7,333
Other	3,457	8,270
Total	548,551	814,871
Valuation allowance	(23,600)	(23,600)
Total	524,951	791,271
Deferred Tax Assets, Net	$ 441,820	$ 633,637