MARKETABLE SECURITIES - Activity in Investments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments rollforward
Opening balance	$ 1,743	$ 1,295	$ 1,806
Additions/transfers during year	366	34,157
Disposals/transfers during year	(778)	(162)
Unrealized (loss) gain on securities held	286	10,684	(511)
McEwen Copper deconsolidation		(44,231)
Ending balance	1,617	1,743	1,295
Marketable securities
Investments rollforward
Opening balance	1,743	1,133	1,644
Additions/transfers during year	243	34,157
Disposals/transfers during year	(778)
Unrealized (loss) gain on securities held	(2)	10,684	(511)
McEwen Copper deconsolidation		(44,231)
Ending balance	1,206	1,743	1,133
Warrants
Investments rollforward
Opening balance		162	162
Additions/transfers during year	123
Disposals/transfers during year		$ (162)
Unrealized (loss) gain on securities held	288
Ending balance	$ 411		$ 162

Amount of deconsolidation of investments.

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Disposals or transfers of available for sale and trading securities.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Cash flow for purchase of available for sale and trading securities.

+ References

No definition available.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
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-Name Accounting Standards Codification
-Section 45
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
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-Publisher FASB
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- Definition

Amount of unrealized gain (loss) on investment.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
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