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INCOME AND MINING TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Deductible temporary differences relating to: |  |
Marketable securities | $ 1,147 | $ 2,397
Reclamation liabilities | 40,118 | 31,080
Lease liabilities | 26,618 | 28,730
Deductibility of other taxes | 10,311 | 10,224
Stock-based compensation | 2,030 | 2,931
Other items | 19,627 | 13,286
Deferred tax assets, gross | 99,851 | 88,648
Investment incentive tax credits | 17,912 | 18,772
Tax loss carryforwards | 53,164 | 43,384
Less: Valuation allowance | (74,640) | (61,101)
Total deferred income tax assets | 96,287 | 89,703
Taxable temporary differences relating to: |  |
Marketable securities | (1,137) | 0
Inventories | (16,969) | (49,004)
Mineral properties, plant and equipment | (380,348) | (332,886)
Convertible notes | 0 | (95)
Mineral tax | (38,969) | (41,803)
Other items | (409) | (6,401)
Total deferred income tax liabilities | (437,832) | (430,189)
Balance sheet presentation |  |
Deferred income tax assets | 22,307 | 1,915
Deferred income tax liabilities | (363,852) | (342,401)
Deferred income tax liabilities, net | $ (341,545) | $ (340,486)

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