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Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2022
Asset Retirement Obligations  
Schedule of asset retirement obligation activity

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Years Ended

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December 31, 

(in thousands)

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2022

    

2021

Beginning balance

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$

12,833

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$

8,802

Liabilities incurred

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2,997

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2,456

PlugShare acquisition

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​

—

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​

32

Accretion expense

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1,915

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1,602

Change in estimate

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​

(1,175)

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​

181

Liabilities settled

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(1,097)

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(240)

Ending balance

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$

15,473

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$

12,833