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Inventory Impairments and Land Option Contract Abandonments (Details) (USD $) | 0 Months Ended | 3 Months Ended | 12 Months Ended
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Mar. 12, 2013 | Nov. 30, 2013 community | Aug. 31, 2013 | May 31, 2013 | Nov. 30, 2012 community | Aug. 31, 2012 | May 31, 2012 | Feb. 29, 2012 | Nov. 30, 2013 property lot community | Nov. 30, 2012 property lot community | Nov. 30, 2011 lot property
Inventory Impairments and Land Option Contract Abandonments (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  | $ 400,000 |  |  | $ 5,200,000 | $ 6,400,000 | $ 9,900,000 | $ 6,600,000 | $ 391,000 |  | $ 28,107,000 |  | $ 22,730,000 |
Number of land parcels or communities evaluated for recoverability |  |  |  |  |  |  |  |  | 67 |  | 135 |  | 138 |
Number of land parcels or communities associated with non cash inventory impairment charges |  |  |  |  |  |  |  |  | 1 |  | 14 |  | 12 |
Post impairment fair value of land parcels or communities |  |  |  |  |  |  |  |  | 1,100,000 |  | 39,900,000 |  |  |
Charges related to adjustment to the fair value of real estate |  |  |  |  |  |  |  |  |  |  |  |  | 18,100,000 |
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges |  | 293,100,000 |  |  | 307,200,000 |  |  |  | 293,100,000 |  | 307,200,000 |  |  |
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges |  | 42 |  |  | 46 |  |  |  | 42 |  | 46 |  |  |
Land option contract abandonment charges | 0 | 2,900,000 | 0 | 300,000 | 400,000 |  |  |  | 3,190,000 |  | 426,000 |  | 3,061,000 |
Number of Lots on which abandonment charges are recognized |  |  |  |  |  |  |  |  | 295 |  | 446 |  | 830 |
Remaining useful life in addition to specified useful lives |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |
Specified period of remaining useful lives |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |
Expected realization period of inventory maximum |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |
Estimated Fair Value |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inventory Impairments and Land Option Contract Abandonments (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Post impairment fair value of land parcels or communities |  |  |  |  |  |  |  |  | 1,100,000 |  | 39,900,000 |  | 34,000,000 |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount Rate Used in Estimating Discounted Cash Flow [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Estimate Input at Average Selling Price |  |  |  |  |  |  |  |  | 339,700 | [1] | 115,200 | [1] | 142,900 | [1]
Fair Value Estimate Input at Sales for Period |  |  |  |  |  |  |  |  | 1 | [1] | 1 | [1] | 1 | [1]
Fair Value Inputs, Discount Rate |  |  |  |  |  |  |  |  | 17.00% | [1] | 17.00% | [1] | 17.00% | [1]
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount Rate Used in Estimating Discounted Cash Flow [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Estimate Input at Average Selling Price |  |  |  |  |  |  |  |  | $ 339,700 | [1] | $ 556,300 | [1] | $ 391,900 | [1]
Fair Value Estimate Input at Sales for Period |  |  |  |  |  |  |  |  | 1 | [1] | 6 | [1] | 10 | [1]
Fair Value Inputs, Discount Rate |  |  |  |  |  |  |  |  | 17.00% | [1] | 20.00% | [1] | 20.00% | [1]
[1] | (a)The ranges of inputs used in each period primarily reflect the underlying variability among the housing markets where each of the impacted communities or land parcels are located, rather than fluctuations in prevailing market conditions.

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