XML 59 R23.htm IDEA: XBRL DOCUMENT v2.4.0.8
ASSET RETIREMENT OBLIGATIONS (Tables)
6 Months Ended
Jun. 30, 2013
ASSET RETIREMENT OBLIGATIONS  
Schedule of composition of asset retirement obligations rollforward

 

Beginning January 1, 2013 liability

 

$

11,029,206

 

Accretion expense

 

244,182

 

Liabilities incurred

 

16,727

 

Liabilities settled

 

(187,976

)

Revisions

 

5,422

 

Ending June 30, 2013 liability

 

$

11,107,561