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Financial Instruments and Fair Value Disclosure (Fair Value Assets Measured On Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring - Homebuilding - Level 3 - USD ($)
$ in Thousands
 12 Months Ended
Nov. 30, 2021
Nov. 30, 2020
Nov. 30, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Finished homes and construction in progress, carrying value $ 32,364 $ 176,637 $ 218,942
Finished homes and construction in progress, fair value 16,342 148,684 205,201
Finished homes and construction in progress, total gains and losses (16,022) (27,953) (13,741)
Land and land under development, carrying value 35,775 182,137 121,564
Land and land under development, fair value 26,841 92,355 82,816
Land and land under development, total gains (losses) (8,934) (89,782) (38,748)
Other assets, carrying value 12,764 0 60,363
Other assets, fair value 12,024 0 56,727
Other assets, total gains (loss) $ (740) $ 0 $ (3,636)