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ASSET RETIREMENT OBLIGATIONS (Tables) | 9 Months Ended
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Sep. 30, 2021
ASSET RETIREMENT OBLIGATIONS |
Schedule of activity related to ARO liability | The Company recorded the following activity related to its ARO liability (in thousands): ​
​ | ​ | ​ | ​
Liability for asset retirement obligations as of December 31, 2020 |  | $ | 10,583
Additions | ​ | ​ | 111
Accretion expense | ​ | ​ | 367
Revisions in estimated cash flows | ​ | ​ | 725
Liability for asset retirement obligations as of September 30, 2021 | ​ | $ | 11,786

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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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