Income Taxes, Operating Loss Carryforwards (Details) - USD ($)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014
Income Taxes
Federal and state net operating and capital loss carryforwards		$ 136,000,000
Federal and state capital loss carryover		0
Amount recorded in capital gain from the redemption of preferred stock	$ 2,418,528
Capital Loss Carryforward
Income Taxes
Federal and state capital loss carryover		4,400,000
REIT subsidiaries
Income Taxes
Federal and state net operating and capital loss carryforwards		13,200,000	$ 11,900,000
REIT subsidiaries | Capital Loss Carryforward
Income Taxes
Federal and state capital loss carryover that will expire in 2017		$ 2,000,000