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Inventory Impairments and Land Option Contract Abandonments (Narratives) (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 29, 2016 USD ($) property lot delivery | Feb. 28, 2015 USD ($) property lot | Nov. 30, 2015 USD ($) property
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Acquisition Costs Related To Land Option Contracts And Other Similar Contracts | $ 54,200,000 |  | $ 65,600,000
Fair Value Estimate Input, Delivery For Period | delivery | 1 |  |
Fair Value Inputs, Discount Rate | 17.00% |  |
Number of land parcels or communities evaluated for recoverability | property | 20 | 20 |
Carrying Value of Communities or Land Parcels Evaluated for Impairment | $ 179,400,000 | $ 165,100,000 |
Impairment of Real Estate | 1,346,000 | $ 0 | 8,000,000
Fair Value Estimate Input at Average Selling Price | 310,000 |  |
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges | $ 250,400,000 |  | $ 254,200,000
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges | 28 |  | 28
Land Option Contract Abandonment Lots | lot | 180 | 312 |
Maximum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Acquisition Costs Related To Land Option Contracts And Other Similar Contracts | $ 100,000 |  |
Land Option Contract Abandonment [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Payments to Acquire Land | (620,000) | $ (448,000) |
Southeast [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Impairment of Real Estate | 559,000 | 0 |
Southeast [Member] | Land Option Contract Abandonment [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Payments to Acquire Land | 0 | (448,000) |
Central [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Impairment of Real Estate | 787,000 | 0 |
Central [Member] | Land Option Contract Abandonment [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Payments to Acquire Land | $ (460,000) | $ 0 |

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