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Summary Of Significant Accounting Policies (Unobservable inputs) (Details) | Nov. 30, 2021 home USD ($) | Nov. 30, 2020 home USD ($)
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Average selling price | Level 3 | Discounted Cash Flow Model | Fair Value, Measurements, Nonrecurring | Minimum |  |
Segment Reporting Information [Line Items] |  |
Communities, unobservable inputs | $ | 635,000 | 201,000
Average selling price | Level 3 | Discounted Cash Flow Model | Fair Value, Measurements, Nonrecurring | Maximum |  |
Segment Reporting Information [Line Items] |  |
Communities, unobservable inputs | $ |  | 970,000
Absorption rate per quarter (homes) | Level 3 | Discounted Cash Flow Model | Fair Value, Measurements, Nonrecurring | Minimum |  |
Segment Reporting Information [Line Items] |  |
Communities, unobservable inputs | home | 11 | 3
Absorption rate per quarter (homes) | Level 3 | Discounted Cash Flow Model | Fair Value, Measurements, Nonrecurring | Maximum |  |
Segment Reporting Information [Line Items] |  |
Communities, unobservable inputs | home |  | 15
Discount rate | Minimum |  |
Segment Reporting Information [Line Items] |  |
Communities, unobservable inputs | 0.10 |
Discount rate | Maximum |  |
Segment Reporting Information [Line Items] |  |
Communities, unobservable inputs | 0.20 |
Discount rate | Level 3 | Discounted Cash Flow Model | Fair Value, Measurements, Nonrecurring | Minimum |  |
Segment Reporting Information [Line Items] |  |
Communities, unobservable inputs | 0.20 | 0.20

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