Equity Method Investments (Details)	Dec. 31, 2012
Augusta [Member] | Joint Venture Interest [Member]
Our Ownership Interest in Property Owner	50.00%
Augusta [Member] | Managing Member LLC Interest [Member]
Our Ownership Interest in Property Owner	50.00%
Augusta [Member] | Indirect Equity Interest In Property [Member]
Our Ownership Interest in Property Owner	25.00%
Hillsboro [Member] | Joint Venture Interest [Member]
Our Ownership Interest in Property Owner	37.57%
Hillsboro [Member] | Managing Member LLC Interest [Member]
Our Ownership Interest in Property Owner	33.27%
Hillsboro [Member] | Indirect Equity Interest In Property [Member]
Our Ownership Interest in Property Owner	12.50%