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ASSET RETIREMENT OBLIGATIONS (Tables) | 12 Months Ended
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Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of Asset Retirement Obligation Changes | A roll-forward of the Company's asset retirement obligation is as follows (in thousands):
| Year Ended December 31,
| 2021 |  | 2020
Balance, beginning of year | $ | 28,699 |  |  | $ | 27,908 |
Additional liabilities incurred | 183,758 |  |  | 357 |
Accretion expense | 3,933 |  |  | 1,004 |
Liabilities settled | (4,221) |  |  | (2,464) |
Revisions to estimate | 13,146 |  |  | 1,894 |
Balance, end of year | $ | 225,315 |  |  | $ | 28,699 |
Current portion | 24,000 |  |  | — |
Long-term portion | $ | 201,315 |  |  | $ | 28,699 |

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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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