Net Loss on Disposition of Partial Interest in Development Project	9 Months Ended
Sep. 30, 2014
Net Loss on Disposition of Partial Interest in Development Project [Abstract]
Net Loss on Disposition of Partial Interest in Development Project	Net Loss on Disposition of Partial Interest in Development Project On June 30, 2014, the Company entered into a joint venture with Greenland Atlantic Yards, LLC, a subsidiary of Shanghai-based Greenland Holding Group Company Limited (“Greenland”), to develop Pacific Park Brooklyn, 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 project and will co-develop the 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. As of September 30, 2014, the Company had received $203,923,000 of cash, net of transaction costs, related to the disposition. 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 nine months ended September 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 accounts for the joint venture on the equity method of accounting.

Net Loss on Disposition of Partial Interest in Development Project

On June 30, 2014, the Company entered into a joint venture with Greenland Atlantic Yards, LLC, a subsidiary of Shanghai-based Greenland Holding Group Company Limited (“Greenland”), to develop Pacific Park Brooklyn, 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 project and will co-develop the 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. As of September 30, 2014, the Company had received $203,923,000 of cash, net of transaction costs, related to the disposition. 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 nine months ended September 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 accounts for the joint venture on the equity method of accounting.