Real estate impairment (Details) (USD $)	9 Months Ended	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Porto Cupecoy	Sep. 30, 2011 Porto Cupecoy
Real estate impairment
Non-cash impairment charge of real estate assets	$ 36,869,000	$ 24,616,000	$ 36,869,000
Real estate impairment
Non-cash property, plant and equipment impairment charge	27,919,000		1,677,000	1,677,000
Total impairment charge related to real estate and property development segment	$ 38,546,000

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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+ Details