Summary of Significant Accounting Policies - Changes to Asset Retirement Obligations (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Asset Retirement Obligation Roll Forward Analysis [Roll Forward]
Asset retirement obligations at beginning of period	$ 416,322	$ 256,651
Liabilities incurred during the period	4,259	3,849
Accretion expense	4,124	47,004
Liability revisions	4,740	108,818
Liabilities held for sale	(388,005)	(388,005)
Asset retirement obligations at end of period	$ 41,440	$ 416,322