RECLAMATION AND REMEDIATION LIABILITIES - Reclamation and Accretion (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclamation obligations
Reclamation adjustment reflecting updated estimates	$ 157	$ 991	$ 1,045
Reclamation accretion	2,536	2,354	2,405
Total	$ 2,693	$ 3,345	$ 3,450

Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481639/420-10-35-4

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482017/420-10-50-1

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration