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Properties, net (Details 2) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Properties |  |
Projects in development or held for future development | $ 603,456 | $ 638,919
Projects in development or held for future development | Land in development or held for future development |  |
Properties |  |
Projects in development or held for future development | 222,577 | 229,833
Projects in development or held for future development | Construction in progress, excluding land |  |
Properties |  |
Projects in development or held for future development | $ 380,879 | $ 409,086

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- Definition The current amount of expenditures for a real estate project that has not yet been completed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.10) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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