Cleveland Medical Mart Development Project	12 Months Ended
Dec. 31, 2011
Cleveland Medical Mart Development Project [Abstract]
Development Project Disclosure [Text Block]	18. Cleveland Medical Mart Development Project In 2010, two of our wholly owned subsidiaries entered into agreements with Cuyahoga County, Ohio (the “County”) to develop and operate the Cleveland Medical Mart and Convention Center (the “Facility”), a 1,000,000 square foot showroom, trade show and conference center in Cleveland's central business district. The County is funding the development of the Facility, using the proceeds it received from the issuance of general obligation bonds and other sources, up to the development budget of $465,000,000 and maintain effective control of the property. During the 17-year development and operating period, our subsidiaries will receive net settled payments of approximately $10,000,000 per year, which are net of its $36,000,000 annual obligation to the County. Our subsidiaries' obligation has been pledged by the County to the bondholders, but is payable by our subsidiaries only to the extent that they first receive at least an equal payment from the County. Our subsidiaries engaged a contractor to construct the Facility pursuant to a guaranteed maximum price contract; although our subsidiaries are ultimately responsible for cost overruns, the contractor is responsible for all costs incurred in excess of its contract and has provided a completion guaranty. Construction of the Facility is expected to be completed in 2013. Upon completion, our subsidiaries are required to fund $11,500,000, primarily for tenant improvements, and they are responsible for operating expenses and are entitled to the net operating income, if any, of the Facility. The County may terminate the operating agreement five years from the completion of development and periodically thereafter, if our subsidiaries fail to achieve certain performance thresholds. We account for these agreements using criteria set forth in ASC 605-25, Multiple-Element Arrangements, as our subsidiaries are providing development, marketing, leasing, and other property management related services over the 17-year term. We recognize development fees using the percentage of completion method of accounting. In the year ended December 31, 2011, we recognized $154,080,000 of revenue, which is offset by development costs expensed of $145,824,000.

Cleveland Medical Mart Development Project

12 Months Ended

Dec. 31, 2011

Cleveland Medical Mart Development Project [Abstract]

Development Project Disclosure [Text Block]

18. Cleveland Medical Mart Development Project

In 2010, two of our wholly owned subsidiaries entered into agreements with Cuyahoga County, Ohio (the “County”) to develop and operate the Cleveland Medical Mart and Convention Center (the “Facility”), a 1,000,000 square foot showroom, trade show and conference center in Cleveland's central business district. The County is funding the development of the Facility, using the proceeds it received from the issuance of general obligation bonds and other sources, up to the development budget of $465,000,000 and maintain effective control of the property. During the 17-year development and operating period, our subsidiaries will receive net settled payments of approximately $10,000,000 per year, which are net of its $36,000,000 annual obligation to the County. Our subsidiaries' obligation has been pledged by the County to the bondholders, but is payable by our subsidiaries only to the extent that they first receive at least an equal payment from the County. Our subsidiaries engaged a contractor to construct the Facility pursuant to a guaranteed maximum price contract; although our subsidiaries are ultimately responsible for cost overruns, the contractor is responsible for all costs incurred in excess of its contract and has provided a completion guaranty. Construction of the Facility is expected to be completed in 2013. Upon completion, our subsidiaries are required to fund $11,500,000, primarily for tenant improvements, and they are responsible for operating expenses and are entitled to the net operating income, if any, of the Facility. The County may terminate the operating agreement five years from the completion of development and periodically thereafter, if our subsidiaries fail to achieve certain performance thresholds.

We account for these agreements using criteria set forth in ASC 605-25, Multiple-Element Arrangements, as our subsidiaries are providing development, marketing, leasing, and other property management related services over the 17-year term. We recognize development fees using the percentage of completion method of accounting. In the year ended December 31, 2011, we recognized $154,080,000 of revenue, which is offset by development costs expensed of $145,824,000.