XML 49 R31.htm IDEA: XBRL DOCUMENT v3.6.0.2
Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2016
Asset Retirement Obligation Disclosure [Abstract]  
Schedule Of Asset Retirement Obligations [Table Text Block]
The following table shows certain information about our AROs for the periods indicated:
 
2016
 
2015
 
(In thousands)
ARO liability, January 1:
$
98,297

 
$
100,567

Accretion of discount
2,779

 
3,453

Liability incurred
584

 
6,754

Liability settled
(1,215
)
 
(2,893
)
Liability sold
(10,882
)
 
(421
)
Revision of estimates (1)
(19,393
)
 
(9,163
)
ARO liability, December 31:
70,170

 
98,297

Less current portion
2,906

 
3,965

Total long-term ARO liability
$
67,264

 
$
94,332

_________________________
(1)
Plugging liability estimates were revised in both 2016 and 2015 for updates in the cost of services used to plug wells over the preceding year. We had various upward and downward adjustments as well as changes in estimated timing of cash flows.