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DEFERRED REVENUE - Narrative (Details) | 12 Months Ended
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Dec. 31, 2023 USD ($) oz | Dec. 31, 2022 USD ($) oz | Dec. 31, 2019 USD ($)
Disclosure of deferred income [Line Items] |  |  |
Proceeds from gold prepayment |  | $ 236,000,000.0 |
Sales Arrangement, Average Forward Contract Price Of Amount Deferred, per Ounce | $ 1,753 |  |
2019 Prepay Arrangement |  |  |
Disclosure of deferred income [Line Items] |  |  |
Floor price (in dollars per ounce) |  | 1,300 |
Cap price (in dollars per ounce) |  | 1,500 |
Proceeds from gold prepayment |  | $ 30,000,000 | $ 169,800,000
Sales arrangement, monthly amount of product provided | oz |  | 12,500 |
Sales arrangement, total amount of product provided | oz |  | 150,000 |
Purchase arrangement, weighted average cost, percentage per annum |  | 0.0538 |
2022 Prepay Arrangements |  |  |
Disclosure of deferred income [Line Items] |  |  |
Floor price (in dollars per ounce) | 1,700 |  |
Cap price (in dollars per ounce) | $ 2,100 |  |
Proceeds from gold prepayment |  | $ 236,000,000 |
Sales arrangement, total amount of product provided | oz | 150,000 |  |
Purchase arrangement, weighted average cost, percentage per annum | 0.0445 |  |
Purchase arrangement, average forward contract price | $ 1,753 |  |
Purchase arrangement, average forward contract price, gold basis | oz | 50,000 |  |
Purchase arrangement, collar range, gold basis | oz | 100,000 |  |
Sales arrangement, deferred delivery, amount of ounces | oz | 6,250 |  |
2024 Prepay Arrangement |  |  |
Disclosure of deferred income [Line Items] |  |  |
Purchase arrangement, weighted average cost, percentage per annum | 0.113 |  |
Purchase arrangement, average forward contract price | $ 1,916 |  |
Purchase arrangement, total amount of product provided | oz | 31,250 |  |
Proceeds from gold prepayment (to be received in Q1 2024) | $ 59,900,000 |  |
2022 and 2024 Combined Prepay Arrangement |  |  |
Disclosure of deferred income [Line Items] |  |  |
Sales arrangement, deferred delivery, amount of ounces | oz | 37,500 |  |

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- Details
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