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Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2016
Asset Retirement Obligation [Abstract]  
Schedule of Change in Asset Retirement Obligation
The following table describes the changes to the Company’s asset retirement obligation liability:
 
Successor
Predecessor
 
October 2 through December 31, 2016
January 1 through October 1, 2016
Year Ended December 31, 2015
(In thousands)
 
 
 
Balance at beginning of period (including current portion)
$
354,326

$
410,454

$
418,118

Accretion expense
7,634

24,321

33,680

Obligations of divested operations
—

(14,702
)
(334
)
Adjustments to the liability from changes in estimates
—

3,003

(28,570
)
Liabilities settled
(5,218
)
(11,087
)
(12,440
)
Fresh start accounting adjustment
—

(57,663
)
—

Balance at period end
$
356,742

$
354,326

$
410,454

Current portion included in accrued expenses
(19,515
)
(17,290
)
(13,795
)
Noncurrent liability
$
337,227

$
337,036

$
396,659