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Investments in Unconsolidated Joint Ventures (Details Textual) (USD $) | 3 Months Ended | 6 Months Ended | 3 Months Ended
--- | --- | --- | ---
May 31, 2011 | May 31, 2012 | May 31, 2011 | May 31, 2011 South Edge [Member] | Feb. 28, 2011 South Edge [Member]
Investments In Unconsolidated Joint Ventures (Textual) [Abstract] |  |  |  |  |
Loss on loan guaranty | $ 14,572,000 |  | $ 37,330,000 | $ 14,600,000 | $ 22,800,000
Investments in Unconsolidated Joint Ventures (Additional Textual) [Abstract] |  |  |  |  |
Equity in loss of unconsolidated joint ventures including pretax, noncash impairment charges |  | $ 0 | $ 53,700,000 |  |

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- Definition Loss on loan guaranty. + References No definition available. + Details
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- Definition Noncash impairment charges included in equity in loss of unconsolidated joint ventures. + References No definition available. + Details
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