XML 25 R14.htm IDEA: XBRL DOCUMENT v3.21.2
Asset Retirement Obligations
 9 Months Ended
Sep. 30, 2021
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations Asset Retirement Obligations
Activity related to the Company’s asset retirement obligations is as follows:
(In thousands)Nine Months Ended 
September 30, 2021
Balance at beginning of period$85,989 
Liabilities incurred2,924 
Liabilities settled (135)
Accretion expense3,454 
Balance at end of period92,232 
Less: current asset retirement obligations(500)
Noncurrent asset retirement obligations$91,732