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Advances to Joint Venture Partners (Details Textual) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Advances to Joint Venture Partners (Textual) [Abstract]
Advances to joint venture partner	$ 10,200	$ 10,200

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- Definition

Amounts due from joint venture partners which are due after one year (or one business cycle).

+ References

No definition available.

+ Details

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Period Type:	instant

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- Details

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