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Inventory Impairments and Land Option Contract Abandonments (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2014 USD ($) community | Nov. 30, 2015 USD ($) lot community delivery property | Nov. 30, 2014 USD ($) lot community delivery property | Nov. 30, 2013 USD ($) lot delivery property
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Impairment of Real Estate |  | $ (34,200,000) | $ (8,030,000) | $ (37,628,000) | $ (391,000)
Acquisition Costs Related To Land Option Contracts And Other Similar Contracts |  | 48,000,000 | 65,600,000 | 48,000,000 |
Carrying Value of Communities of Land Parcels Evaluated for Impairment |  | 266,900,000 | $ 286,300,000 | $ 266,900,000 | $ 146,000,000
Number of land parcels or communities associated with non cash inventory impairment charges | property |  |  | 4 | 8 | 1
Number of land parcels or communities evaluated for recoverability | property |  |  | 35 | 32 | 31
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges |  | $ 266,600,000 | $ 254,200,000 | $ 266,600,000 |
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges | community |  | 33 | 28 | 33 |
Number of Lots on which abandonment charges are recognized | lot |  |  | 1,166 | 1,306 | 295
Remaining useful life in addition to specified useful lives |  |  | 1 year |  |
Land Option Contract Abandonment Lots Associated with Projects Less Than $100,000 | lot |  |  | 78 | 7,292 | 9,406
Specified period of remaining useful lives |  |  | 10 years |  |
Expected realization period of inventory maximum |  |  | 5 years |  |
Land [Member] |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Impairment of Real Estate |  |  | $ 0 | $ (26,600,000) |
Number of land parcels or communities associated with non cash inventory impairment charges | property |  |  |  | 2 |
Communities [Member] |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Impairment of Real Estate |  |  |  | $ (11,000,000) |
Number of land parcels or communities associated with non cash inventory impairment charges | property |  |  |  | 6 |
Minimum |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Fair Value Estimate Input at Average Selling Price | [1] |  | $ 178,100 | $ 216,100 | $ 339,700
Fair Value Estimate Input at Sales for Period | delivery | [1] |  | 2 | 1 | 1
Fair Value Inputs, Discount Rate | [1] |  | 17.00% | 17.00% | 17.00%
Maximum |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Fair Value Estimate Input at Average Selling Price | [1] |  | $ 509,400 | $ 316,800 | $ 339,700
Fair Value Estimate Input at Sales for Period | delivery | [1] |  | 4 | 4 | 1
Fair Value Inputs, Discount Rate | [1] |  | 20.00% | 19.00% | 17.00%
Acquisition Costs Related To Land Option Contracts And Other Similar Contracts |  |  | $ 100,000 |  |
Estimate of Fair Value Measurement [Member] |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Assets, Fair Value Disclosure |  | $ 30,600,000 | 12,000,000 | $ 30,600,000 | $ 1,100,000
Land Option Contract Abandonment [Member] |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Loss on Contract Termination |  |  | $ 1,561,000 | $ 1,803,000 | $ 3,190,000
[1] | The ranges of inputs used in each period primarily reflect differences between 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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