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Asset Retirement Obligation (Tables)
6 Months Ended
Jun. 30, 2022
Asset Retirement Obligation  
Schedule of asset retirement obligation

    

June 30, 

    

December 31, 

    

2022

    

2021

    

(in thousands)

Asset retirement obligation – balance at beginning of period

$

4,725

$

3,844

Changes in estimate

 

517

 

794

Payments

(29)

(220)

Accretion

 

198

 

307

Asset retirement obligation – balance at end of period

$

5,411

$

4,725