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Asset Retirement Obligation

12 Months Ended

Dec. 31, 2017

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

12. Asset Retirement Obligation

The Company had recorded a post-closure reclamation and site restoration obligation of $8,982 at December 31, 2017. The following is a reconciliation of the total reclamation liability for asset retirement obligations.

Balance at December 31, 2015		$	1,180
Additions and revisions of prior estimates			399
Reductions to liabilities due to revision of estimates			(211	)
Accretion expenses			16
Balance at December 31, 2016		$	1,384
Additions and revisions of prior estimates			7,084
Accretion expenses			514
Balance at December 31, 2017		$	8,982

During the fourth quarter of 2017, the Company reduced the expected mining period for a certain phase of its operations. This change in estimate resulted in an approximate $4,511 increase to the liability.

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- References

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-URI http://asc.fasb.org/subtopic&trid=2175671

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