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Summary Of Significant Accounting Policies (Unobservable inputs) (Details)
Nov. 30, 2021
home
USD ($)
Nov. 30, 2020
home
USD ($)
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