XML 42 R28.htm IDEA: XBRL DOCUMENT v3.8.0.1
Asset Retirement Obligations (Tables)
 6 Months Ended
Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of reconciliations of the beginning and ending asset retirement obligation balances
The following is a reconciliation of the beginning and ending asset retirement obligations for the six months ended December 31, 2017 and for the year ended June 30, 2017:
 
December 31,
2017
 
June 30,
2017
Asset retirement obligations — beginning of period
$
1,288,743

 
$
962,196

Liabilities incurred
—

 
52,792

Liabilities settled
—

 
(157,164
)
Liabilities sold
—

 
(47,817
)
Accretion of discount
44,602

 
59,664

Revision of previous estimates
(778
)
 
419,072

Asset retirement obligations — end of period
$
1,332,567

 
$
1,288,743

Less current portion in accrued liabilities
(35,539
)
 
(35,115
)
Long-term portion of asset retirement obligations
$
1,297,028

 
$
1,253,628