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Provision for Environmental Liability	9 Months Ended
	Sep. 30, 2021
Provision for Environmental Liability
Provision for Environmental Liability	7. Provision for Environmental Liability ​ Vista maintains a $240 provision for reclamation costs attributable to certain mining claims previously held by the Company, should no other potentially responsible parties be identified. ​

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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

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

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