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Fair Value Disclosures (Assets Measured at Fair Value on Nonrecurring Basis) (Details) (Fair Value, Measurements, Nonrecurring, USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2012 | Nov. 30, 2011
Assets measured at fair value on a nonrecurring basis |  |  |  |
Long-lived assets held and used | $ 30,620 | [1] | $ 34,022 | [1]
Level 2 |  |  |  |
Assets measured at fair value on a nonrecurring basis |  |  |  |
Long-lived assets held and used | 0 | [1] | 75 | [1]
Level 3 |  |  |  |
Assets measured at fair value on a nonrecurring basis |  |  |  |
Long-lived assets held and used | $ 30,620 | [1] | $ 33,947 | [1]
[1] | Amounts represent the aggregate fair values for communities or land parcels for which the Company recognized inventory impairment charges during the period, as of the date that the fair value measurements were made. The carrying value for these communities or land parcels may have subsequently increased or decreased from the fair value reflected due to activity that has occurred since the measurement date.

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- Definition Long lived assets held and used fair value disclosure. + References No definition available. + Details
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Balance Type: | debit
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- Details
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