Consolidated Balance Sheets [Parenthetical] - USD ($)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Available-for-sale Securities Pledged as Collateral (in dollars)	$ 366,103,204	$ 444,984,955
Preferred Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	50,000,000	50,000,000
Preferred Stock, Dividend Rate, Percentage	8.75%	8.75%
Preferred Stock, Liquidation Preference, Value (in dollars)	$ 25	$ 25
Preferred Stock, Shares Issued	1,610,000	800,000
Preferred Stock, Shares Outstanding	1,610,000	800,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	450,000,000	450,000,000
Common stock, shares issued	14,718,750	7,389,250
Common stock, shares outstanding	14,718,750	7,389,250
Variable Interest Entity, Consolidated, Carrying Amount, Assets	$ 2,389,754,101	$ 0
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities	$ 2,180,936,221	$ 0