Provision for Environmental Liability	3 Months Ended
Mar. 31, 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.

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.

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

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