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Asset Retirement Obligations (Tables) | 3 Months Ended
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Mar. 31, 2022
Asset retirement obligations |
Schedule of asset retirement obligation activity | ​
​ | ​ | ​ | ​
​ |  | March 31,
(in thousands) | ​ | ​ | 2022
Beginning balance | ​ | $ | 12,833
Liabilities incurred | ​ |  | 1,001
Accretion expense | ​ |  | 459
Liabilities settled | ​ |  | (219)
Ending balance | ​ | $ | 14,074

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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