Derivative Instruments (Effects of Derivative Instruments on Statements of Operations) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments [Abstract]
(Loss) Gain recognized in accumulated OCI	$ (3,600)		$ (3,600)	$ 24,100
Gain reclassified from accumulated OCI into (loss) income	$ 19,300	$ 63,100	$ 78,200	$ 134,800