Summary of Significant Accounting Policies (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2012 Contract	Dec. 31, 2011 Contract
Transactions in call options
Outstanding, end of the period, Premiums Received	$ 1,504,277	$ 1,428,047
Options [Member]
Transactions in call options
Outstanding, beginning of period, Number of Contracts	1,657	1,813
Outstanding, beginning of period, Premiums Received	1,428,047	1,629,313
Options written, Number of Contracts	7,357	13,702
Options written, Premiums Received	4,489,456	10,798,390
Options terminated in closing purchase transactions, Number of Contracts	(4,822)	(9,895)
Options terminated in closing purchase transactions, Premiums Received	(2,775,250)	(8,022,605)
Options expired, Number of Contracts	(2,528)	(3,963)
Options expired, Premiums Received	(1,637,976)	(2,977,051)
Outstanding, end of the period, Number of Contracts	1,664	1,657
Outstanding, end of the period, Premiums Received	$ 1,504,277	$ 1,428,047