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Asset Retirement Obligations
6 Months Ended
Jun. 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)Six Months Ended 
June 30, 2021
Balance at beginning of period$85,989 
Liabilities incurred1,544 
Accretion expense2,274 
Balance at end of period89,807 
Less: current asset retirement obligations(500)
Noncurrent asset retirement obligations$89,307