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Asset Retirement Obligations
 12 Months Ended
Dec. 31, 2018
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations
ASSET RETIREMENT OBLIGATIONS 

 
 
 
Predecessor
(in thousands)
2018
 
 
2017
Balance, as of January 1 (Predecessor)
$
10,469

 
 
$
8,400

Liabilities settled
(63
)
 
 


Revisions to estimates
63

 
 


Accretion expense
39

 
 


Balance, as of February (Predecessor)
$
10,508

 
 


 
 
 
 
 
Balance, beginning of year (Successor)(1)
$
5,998

 
 
—

Liabilities assumed
—

 
 
604

Liabilities incurred
2,536

 
 
1,583

Liabilities settled
(1,610
)
 
 
(119
)
Liabilities transferred via sale
(383
)
 
 
—

Revisions to estimates
4,130

 
 
(337
)
Accretion expense
738

 
 
338

Balance, as of December 31
11,409

 
 
10,469

Less: Current portion
2,079

 
 
69

Long-term portion
$
9,330

 
 
$
10,400


_________________
(1) Represents the same wells under the Predecessor Period valued at a higher interest rate of 10.2% compared to interest rates ranging between 4.4% and 8.8%.