Annual report pursuant to Section 13 and 15(d)

ASSET RETIREMENT OBLIGATIONS (Details)

v3.20.4
ASSET RETIREMENT OBLIGATIONS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Asset retirement obligation [Roll Forward]    
Beginning Asset Retirement Obligations $ 17,299 $ 12,501
Liabilities Acquired During the Period 0 2,680
Liabilities Incurred During the Period 688 1,361
Revision of Estimates 21 0
Accretion of Discount on Asset Retirement Obligations 1,192 973
Liabilities Settled During the Period (20) (216)
Ending Asset Retirement Obligations $ 19,181 $ 17,299