The number of shares received for consideration.

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The fair value adjustments to long lived assets.

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Price of silver per ounce

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value of asset after deduction of liability.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Fair value measurements (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Dec. 04, 2020 shares	Dec. 31, 2020 USD ($) g / T $ / shares	Dec. 31, 2019 USD ($)
Fair value measurements
Derivative at fair value (Note 8)			$ 254
Silver Price Per Ounce \| $ / shares		$ 20.00
Threshold Grams of Silver Per Tonne \| g / T		1,000
Fair value Assumptions
Fair value adjustments to long lived assets		$ 0	0
Sale, not discontinued operations \| Fabled Copper Corp. \| Binding Letter of Intent Agreement
Fair value measurements
Consideration Received in Shares \| shares \| shares	1,000,000
Recurring
Fair value measurements
Cash and cash equivalents		9,704	4,593
Derivative at fair value (Note 8)			254
Short-term investments		79
Assets		9,783	4,847
Recurring \| Level 1
Fair value measurements
Cash and cash equivalents		9,704	4,593
Short-term investments		79
Assets		9,783	4,593
Recurring \| Level 3
Fair value measurements
Derivative at fair value (Note 8)			254
Assets			254
Non-recurring
Fair value Assumptions
Fair value measurements		$ 0	$ 0