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Asset Retirement Obligations | 6 Months Ended
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Jun. 30, 2022
Asset Retirement Obligation Disclosure [Abstract] |
Asset retirement obligations | 21. Asset retirement obligations The Company’s asset retirement obligation represents the present value of estimated future costs associated with the decommissioning of the Northeast Gateway Deepwater LNG Port in the Massachusetts Bay. In accordance with the port's license and permits, the Company is legally required to decommission the port and estimates that this will occur at the end of the related pipeline capacity agreement in 2032. The following table presents the balances for asset retirement obligations and the changes due to accretion expense (in thousands):
| June 30, 2022 |  |  | December 31, 2021 |
Asset retirement obligations, beginning of period | $ | 34,929 |  |  | $ | 33,499 |
Accretion expense |  | 738 |  |  |  | 1,430 |
Asset retirement obligations, end of period | $ | 35,667 |  |  | $ | 34,929 |

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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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