SUPPLEMENTAL CASH FLOW INFORMATION - Operating Assets and Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Decrease (increase) in operating assets:
Trade and other receivables	$ (9,532)	$ (5,515)
Inventories	(56,371)	(56,843)
Other operating assets	(911)	7,193
Increase (decrease) in operating liabilities:
Accounts payable	(22,700)	7,101
Accrued liabilities	(17,488)	(66,056)
Reclamation liabilities	(791)	62
Other operating liabilities	(4,031)	(27,286)
Net change in operating assets and liabilities	$ (111,824)	$ (141,344)

Increase (Decrease) in Asset Retirement Obligations, Noncurrent

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- Definition

The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

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- Definition

The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

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- Definition

The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.

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- Definition

The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

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- References

No definition available.

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- Definition

The increase (decrease) during the reporting period of all assets and liabilities used in operating activities.

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- References

No definition available.

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- Definition

Amount of increase (decrease) in operating assets classified as other.

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- Definition

Amount of increase (decrease) in operating liabilities classified as other.

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