XML 35 R47.htm IDEA: XBRL DOCUMENT

Asset Retirement Obligations (Details) (USD $)	12 Months Ended
Asset Retirement Obligations (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Beginning balance	$ 1,278,889	$ 1,235,193	$ 1,193,324
Incurred during the period	(14,105)	(13,397)	0
Additions for new wells	25,092	11,779	6,942
Accretion expense	38,341	45,314	34,955
Ending balance	$ 1,327,861	$ 1,278,889	$ 1,235,193

Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

+ References+ Details