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ASSET RETIREMENT OBLIGATIONS (Tables)
 12 Months Ended
Dec. 31, 2018
ASSET RETIREMENT OBLIGATIONS  
Schedule of activity related to ARO liability

The Company recorded the following activity related to its ARO liability (inclusive of the current portion) (in thousands):

 

 

 

 

 

Liability for asset retirement obligations as of December 31, 2016

    

$

32,375

Liabilities settled and divested (1)

 

 

(33,796)

Additions

 

 

592

Acquisitions (1)

 

 

3,109

Accretion expense

 

 

1,306

Revisions in estimated cash flows

 

 

782

Liability for asset retirement obligations as of December 31, 2017

 

$

4,368

Liabilities settled and divested (1)

 

 

(590)

Additions

 

 

988

Acquisitions (1)

 

 

2,465

Accretion expense

 

 

329

Revisions in estimated cash flows

 

 

(646)

Liability for asset retirement obligations as of December 31, 2018

 

$

6,914

(1)       See Note 5, “Acquisitions and Divestitures,” for additional information on the Company’s acquisition and divestiture activities.