XML 34 R20.htm IDEA: XBRL DOCUMENT v3.10.0.1

Asset Retirement Obligation

9 Months Ended

Sep. 30, 2018

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

Asset Retirement Obligation

The Company had a post-closure reclamation and site restoration obligation of $8,654 as of September 30, 2018. The following is a reconciliation of the total reclamation liability for asset retirement obligations:

Balance at December 31, 2017	$	8,982
Additions and revisions of prior estimates	1,561
Accretion expense	330
Settlement of liability	(2,219		)
Balance at September 30, 2018	$	8,654

X

- References

No definition available.

+ Details

Name:	us-gaap_AssetRetirementObligationDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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

+ Details

Name:	us-gaap_AssetRetirementObligationDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration