Income Taxes (Details 1) - USD ($) $ in Thousands	Nov. 30, 2015	Nov. 30, 2014
Deferred tax liabilities
Capitalized expenses	$ 110,408	$ 103,196
State taxes	68,866	72,258
Other	196	310
Total	179,470	175,764
Deferred tax assets:
NOLs from 2006 through 2015	423,274	459,393
Tax credits	186,169	176,234
Inventory impairments and land option contract abandonments	179,828	229,264
Employee benefits	93,395	82,776
Warranty, legal and other accruals	49,655	42,621
Capitalized expenses	34,887	24,155
Partnerships and joint ventures	18,557	15,672
Depreciation and amortization	9,146	9,022
Other	4,537	3,009
Total	999,448	1,042,146
Valuation allowance	(37,782)	(41,150)
Total	961,666	1,000,996
Deferred Tax Assets, Net	$ 782,196	$ 825,232