Asset Retirement Obligation |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2017 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Asset Retirement Obligation Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Asset Retirement Obligation |
ASSET RETIREMENT OBLIGATION
A component of the consideration exchanged to purchase the GIGS assets from Energy XXI in June 2015 was the assumption of the seller's asset retirement obligation ("ARO") associated with such assets. The ARO represents the estimated costs of decommissioning the GIGS pipelines and onshore oil receiving and separation facilities in Grand Isle, Louisiana at retirement. The Company recognized the ARO at its estimated fair value on the date of acquisition with a corresponding ARO asset capitalized as part of the carrying amount of the related long-lived assets to be depreciated over the assets' remaining useful lives.
The Company's tenant, EXXI Tenant, has an ARO related to the platform which is currently attached to the GIGS pipelines. If in the future, EXXI is unable to fulfill their obligation, the Company may be required to assume the liability for the related asset removal costs.
In periods subsequent to the initial measurement of an ARO, the Company recognizes changes in the liability resulting from (a) the passage of time through accretion expense and (b) revisions to either the timing or the amount of the estimate of undiscounted cash flows based on periodic revaluations. Future expected cash flows are based on subjective estimates and assumptions, which inherently include significant uncertainties which are beyond the Company's control. These assumptions represent Level 3 inputs in the fair value hierarchy. The Company has no assets that are legally restricted for purposes of settling asset retirement obligations.
In December 2017, the Company revised its estimate to reflect a decrease in marketplace rates for labor and other costs and for the expected timing of work. This change in estimate did not result in any charge to income for the year ended December 31, 2017. The following table is a reconciliation of the asset retirement obligation as of December 31, 2017 and 2016:
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