XML 41 R27.htm IDEA: XBRL DOCUMENT v3.21.1
Asset Retirement Obligation (Tables)
 12 Months Ended
Dec. 31, 2020
Asset Retirement Obligation [Abstract]  
Asset Retirement Obligation Transactions



 

 

 



 

 

 

Balance December 31, 2018

 

$

 2,179 



 

 

 

Accretion expense

 

 

 132 

Liabilities incurred

 

 

 12 

Liabilities settled

 

 

 (83)

Liabilities sold properties

 

 

 (55)

Revisions in estimated liabilities

 

 

 (187)

Balance December 31, 2019

 

$

 1,998 



 

 

 

Accretion expense

 

 

 125 

Liabilities incurred

 

 

 —

Liabilities settled

 

 

 (25)

Liabilities sold properties

 

 

 (50)

Revisions in estimated liabilities

 

 

 69 

Balance December 31, 2020

 

$

 2,117