Net Loss on Disposition of Partial Interest in Development Project	6 Months Ended
Jun. 30, 2014
Net Loss on Disposition of Partial Interest in Development Project [Abstract]
Net Loss on Disposition of Partial Interest in Development Project	On June 30, 2014, the Company entered into a joint venture with Greenland USA, a subsidiary of Shanghai-based Greenland Group, a Chinese state-owned enterprise ("Greenland"), to develop Pacific Park Brooklyn (formerly Brooklyn Atlantic Yards), a 22 acre mixed-use project in Brooklyn, New York. The joint venture will execute on the remaining development rights of the entire project, including the infrastructure and vertical construction of the residential units, but excludes Barclays Center arena and the under construction B2 BKLYN apartment community. Under the joint venture, Greenland acquired 70% of the entire project and will co-develop the entire project with the Company, along with sharing in the entire project costs going forward in proportion to ownership interests. For its 70% equity interest, Greenland invested cash and assumed 70% of the nonrecourse mortgage debt on the project. At June 30, 2014, $163,660,000, which represents approximately 80% of the cash purchase price, net of transaction costs, was received by the Company. The remaining cash purchase price of approximately $42,991,000 is included in notes and accounts receivable and payable 90 days after closing. The transaction resulted in a net loss on disposition of partial interest in development project of $19,590,000 ($16,211,000, net of noncontrolling interests) during the three and six months ended June 30, 2014. Upon closing, the Company determined it was not the primary beneficiary of the joint venture. As a result, the Company deconsolidated the Pacific Park Brooklyn development project and will account for the joint venture on the equity method of accounting.

On June 30, 2014, the Company entered into a joint venture with Greenland USA, a subsidiary of Shanghai-based Greenland Group, a Chinese state-owned enterprise ("Greenland"), to develop Pacific Park Brooklyn (formerly Brooklyn Atlantic Yards), a 22 acre mixed-use project in Brooklyn, New York. The joint venture will execute on the remaining development rights of the entire project, including the infrastructure and vertical construction of the residential units, but excludes Barclays Center arena and the under construction B2 BKLYN apartment community. Under the joint venture, Greenland acquired 70% of the entire project and will co-develop the entire project with the Company, along with sharing in the entire project costs going forward in proportion to ownership interests. For its 70% equity interest, Greenland invested cash and assumed 70% of the nonrecourse mortgage debt on the project. At June 30, 2014, $163,660,000, which represents approximately 80% of the cash purchase price, net of transaction costs, was received by the Company. The remaining cash purchase price of approximately $42,991,000 is included in notes and accounts receivable and payable 90 days after closing. The transaction resulted in a net loss on disposition of partial interest in development project of $19,590,000 ($16,211,000, net of noncontrolling interests) during the three and six months ended June 30, 2014. Upon closing, the Company determined it was not the primary beneficiary of the joint venture. As a result, the Company deconsolidated the Pacific Park Brooklyn development project and will account for the joint venture on the equity method of accounting.