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Asset Retirement Obligations | 3 Months Ended
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Mar. 31, 2021
Asset Retirement Obligations [Abstract] |
Asset Retirement Obligations | 12. ASSET RETIREMENT OBLIGATIONS The following table summarizes the changes in the Company’s asset retirement obligations:
(in thousands) |  | As of March 31, 2021 |  | As of December 31, 2020
Beginning balance |  | $ | 17,334 |  | $ | 15,844
Accretion |  |  | 298 |  |  | 893
Additions |  |  | 14,564 |  |  | 359
Revisions |  |  | — |  |  | 238
Ending balance |  | $ | 32,196 |  | $ | 17,334
Accretion is recorded in the line item “Depreciation, depletion and amortization” on the Company’s condensed consolidated statements of operations. The Company is required under the Etame Marin block PSC to conduct regular abandonment studies to update the estimated costs to abandon the offshore wells, platforms and facilities on the Etame Marin block. The current abandonment study was completed in November 2018. In 2020, the Company recorded $0.4 million in additions associated with the South East Etame 4H development well and $0.2 million in revisions associated with a U.S. property. In connection with the Sasol Acquisition, as discussed in Note 3, the Company added $14.6 million of asset retirement obligations as a result of it increasing its interest in the Etame Marin block.

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- Definition The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2175671 + Details
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