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Commitments and Contingencies (Narratives) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
May 31, 2017 USD ($) | May 31, 2016 USD ($) | May 31, 2017 USD ($) Home | May 31, 2016 USD ($) | Nov. 30, 2016 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |
Minimum warranty on electrical and other building systems (in years) |  |  | 2 years |  |
Maximum warranty on electrical and other building systems (in years) |  |  | 5 years |  |
Warranty for other components of a home (in years) |  |  | 1 year |  |
Payments | $ (6,457) | $ (8,446) | $ (12,569) | $ (12,467) |
Adjustment to increase warranty liability | 0 | $ 393 | 0 | $ 652 |
Performance bonds | 564,800 |  | 564,800 |  | $ 535,700
Letters of credit outstanding | 32,400 |  | 32,400 |  | 31,000
Cash deposits | 31,412 |  | 31,412 |  | 42,829
Aggregate purchase price of land | 855,916 |  | $ 855,916 |  | 1,073,596
Warranty for Other Components of Home |  |  | 1 year |  |
Damages from Product Defects [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Minimum Number of Affected Homes for Construction Defect Claims | Home |  |  | 2 |  |
Structural warranty provided by the company (in years) |  |  | 10 years |  |
Warranty Obligations [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Structural warranty provided by the company (in years) |  |  | 10 years |  |
Self Insurance [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency, Receivable | $ 78,900 |  | $ 78,900 |  | $ 84,500

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