XML 24 R11.htm IDEA: XBRL DOCUMENT
v3.21.2

Plant And Equipment | 9 Months Ended
--- | ---
Sep. 30, 2021
Plant and Equipment |
Plant And Equipment | 5. Plant and Equipment ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021 | ​ | December 31, 2020 | ​
​ | ​ | ​ | ​ | ​ | Accumulated | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Accumulated | ​ | ​ | ​ | ​
​ |  | Cost |  | Depreciation |  | Net |  | Cost |  | Depreciation |  | Net |
Mt Todd, Australia | ​ | $ | 5,411 | ​ | $ | 5,199 | ​ | $ | 212 | ​ | $ | 5,306 | ​ | $ | 5,163 | ​ | $ | 143 | ​
Corporate, United States | ​ | ​ | 333 | ​ | ​ | 333 | ​ | ​ | — | ​ | ​ | 333 | ​ | ​ | 333 | ​ | ​ | — | ​
Used mill equipment, Canada | ​ | ​ | 5,500 | ​ | ​ | — | ​ | ​ | 5,500 | ​ | ​ | 5,500 | ​ | ​ | — | ​ | ​ | 5,500 | ​
​ | ​ | $ | 11,244 | ​ | $ | 5,532 | ​ | $ | 5,712 | ​ | $ | 11,139 | ​ | $ | 5,496 | ​ | $ | 5,643 | ​
​ The used mill equipment is not in use and is listed for sale through a third-party mining equipment dealer. This equipment is not classified as held for sale due to uncertainty as to whether a sale can be completed within one year. Management estimated the value of the mill equipment by considering an appraisal as of December 31, 2020 prepared by an independent valuation specialist, recent listings and sales of similar equipment, and general industry and economic conditions.

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
Name: | us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration