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Asset Retirement Obligations Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract]  
Roll-forward of our asset retirement obligations The following provides a roll-forward of our asset retirement obligations (in thousands):
Asset Retirement Obligations as of December 31, 2019$4,447 
Accretion expense354 
Liabilities incurred for new wells and facilities construction281 
Reductions due to plugged wells and facilities(103)
Revisions in estimates(5)
Asset Retirement Obligations as of December 31, 2020$4,974 
Accretion expense306 
Liabilities incurred for new wells, acquired wells and facilities construction1,120 
Reductions due to plugged wells and facilities(192)
Revisions in estimates(158)
Asset Retirement Obligations as of December 31, 2021$6,050