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Investments in Unconsolidated Joint Ventures (Details 1) (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012 Joint_Venture	Nov. 30, 2011 Joint_Venture
Information related investments in unconsolidated joint ventures
Number of investments in unconsolidated joint ventures	8	8
Investments in unconsolidated joint ventures	$ 121,307	$ 127,926

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- Definition

Number of investments in unconsolidated joint ventures.

+ References

No definition available.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6382870&loc=d3e33749-111570

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