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Notes Payable (Schedule Notes Payable) (Details) - USD ($) $ in Thousands | Aug. 31, 2020 | Nov. 30, 2019 | Feb. 01, 2019
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Mortgages and notes payable | $ 1,747,704 | $ 1,748,747 |
Mortgages and land contracts due to land sellers and other loans |  |  |
Debt Instrument [Line Items] |  |  |
Mortgages and notes payable | $ 5,620 | 7,889 |
Senior Notes [Member] | 7.00% Senior notes due December 15, 2021 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes, rate | 7.00% |  |
Mortgages and notes payable | $ 448,807 | 448,164 |
Senior Notes [Member] | 7.50% Senior notes due September 15, 2022 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes, rate | 7.50% |  |
Mortgages and notes payable | $ 348,697 | 348,267 |
Senior Notes [Member] | 7.625% Senior notes due May 15, 2023 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes, rate | 7.625% |  |
Mortgages and notes payable | $ 351,400 | 351,748 |
Senior Notes [Member] | 6.875% Senior notes due June 15, 2027 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes, rate | 6.875% |  |
Mortgages and notes payable | $ 296,660 | 296,379 |
Senior Notes [Member] | Senior Notes Due Two Thousand Twenty Nine At Four Point Eight Percent [Domain] [Domain] |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes, rate | 4.80% |  |
Mortgages and notes payable | $ 296,520 | $ 296,300 |
Convertible Notes Payable [Member] | 1.375% Convertible senior notes due February 1, 2019 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes, rate |  |  | 1.375%
Mortgages and notes payable |  |  | $ 230,000

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