XML 38 R18.htm IDEA: XBRL DOCUMENT v3.8.0.1
Asset Retirement Obligations
 12 Months Ended
Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations
Asset Retirement Obligations
The following table reconciles our AROs as of the dates presented, which are included in the “Other liabilities” caption on our Consolidated Balance Sheets: 
 
Successor
 
 
Predecessor
 
Year Ended
 
September 13 Through
 
 
January 1 Through
 
December 31,
 
December 31,
 
 
September 12,
 
2017
 
2016
 
 
2016
Balance at beginning of period
$
2,459

 
$
2,687

 
 
$
2,621

Fresh Start Accounting adjustment
—

 
—

 
 
(754
)
Changes in estimates
118

 
27

 
 
176

Liabilities incurred
149

 
—

 
 
469

Liabilities settled
(139
)
 
(311
)
 
 
—

Purchase of properties
494

 
—

 
 
—

Accretion expense
205

 
56

 
 
175

Balance at end of period
$
3,286

 
$
2,459

 
 
$
2,687