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ASSET RETIREMENT OBLIGATIONS (Tables) | 12 Months Ended
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Dec. 31, 2023
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of Asset Retirement Obligations | AROs at December 31, 2023 and 2022 were (in thousands):
| 2023 |  | 2022
Asset retirement obligations | $ | 16,215 |  |  | $ | 18,113 |
Less: Asset retirement obligations due within one year (1) | 2,576 |  |  | 4,550 |
Long-term asset retirement obligations | $ | 13,639 |  |  | $ | 13,563 |
(1) | Classified as a current liability on the consolidated balance sheets, under the caption “Other current liabilities.” Balance at December 31, 2023 related to remediation work planned for 2024.
Schedule of Change in Asset Retirement Obligation | During the years ended December 31, 2023, 2022 and 2021, our ARO changed as follows (in thousands):
| 2023 |  | 2022 |  | 2021
Balance as of January 1 | $ | 18,113 |  |  | $ | 13,745 |  |  | $ | 14,993 |
Accretion of discount | 1,104 |  |  | 1,830 |  |  | 1,429 |
Change in estimates of existing obligations | 1,366 |  |  | 4,138 |  |  | (763) |
Settlement of obligations | (4,756) |  |  | (455) |  |  | (1,943) |
Foreign currency translation | 388 |  |  | (1,145) |  |  | 29 |
Balance as of December 31 | $ | 16,215 |  |  | $ | 18,113 |  |  | $ | 13,745 |

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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://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
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