Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2013

Asset Retirement Obligation Disclosure [Abstract]

Schedule of changes in the asset retirement obligations

The following table summarizes the changes in asset retirement obligations for the nine months ended September 30, 2013:

Total asset retirement obligations at December 31, 2012	$	856,701
Accretion for the period	45,304
Revisions in estimated cash flows	(269		)
Expenditures for the period	(31,519		)
Total asset retirement obligations at September 30, 2013	$	870,217
Less current portion	(56,774		)
Long-term portion	$	813,443