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Asset Retirement Obligations
 12 Months Ended
Jun. 30, 2015
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations
Asset Retirement Obligations
Our asset retirement obligations represent the estimated present value of the amount we will incur to plug, abandon and remediate our producing properties at the end of their productive lives in accordance with applicable laws. The following is a reconciliation of the beginning and ending asset retirement obligation for the years ended June 30, 2015 and 2014:
 
Years Ended
 
2015
 
2014
Asset retirement obligations—beginning of period
$
352,215

 
$
615,551

Liabilities incurred (1)
564,019

 
—

Liabilities settled
(137,604
)
 
(323,665
)
Liabilities sold
(52,526
)
 
(48,273
)
Accretion of discount
34,866

 
41,626

Revisions to previous estimates
12,020

 
66,976

Less: current asset retirement obligations
(57,223
)
 
(146,703
)
Asset retirement obligations—end of period
$
715,767

 
$
205,512


(1)
Primarily attributable to the reversion of our working interest in the Delhi Field in November 2014.