Real Estate Assets Parenthetical for Depreciation Expense (Details) (USD $)	3 Months Ended		6 Months Ended			12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Consolidated Entities [Member]	Dec. 31, 2011 Consolidated Entities [Member]	Jun. 30, 2012 Ohio Properties [Member]	Dec. 31, 2011 Ohio Properties [Member]	Jun. 30, 2012 Consolidated VIEs [Member]	Dec. 31, 2011 Consolidated VIEs [Member]
Property, Plant and Equipment [Line Items]
Depreciation	$ 1,339,238	$ 1,146,692	$ 2,584,646	$ 2,132,007	$ 1,400,000	$ 2,300,000	$ 478,000	$ 829,000	$ 697,000	$ 1,700,000