Derivative Instruments and Fair Value Measurements (Details Textual) (USD $)			3 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Interest Rate Swap [Member]
Derivative Liability, Fair Value, Net (in dollars)	$ 6,223,622	$ 9,486,116
Interest Swaps			The Company will pay fixed rate interest and receive floating-rate interest amounts based on three-month LIBOR settings
Credit Derivatives, Collateral Held Directly or by Third Parties (in dollars)	$ 15,835