COMMITMENTS AND CONTINGENCIES - (Narrative) (Details) - USD ($) |
9 Months Ended | |||||
|---|---|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Jun. 23, 2026 |
Dec. 31, 2025 |
Mar. 31, 2014 |
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| Other Commitments [Line Items] | ||||||
| Licensing condition, obligated stevedoring charge per tonne | $ 1 | |||||
| Damages sought, value | $ 4,600,000 | |||||
| Damages paid, value | 1,400,000 | |||||
| Damages held in escrow, value | $ 3,200,000 | $ 3,200,000 | ||||
| Loss contingency, estimate of possible loss | $ 23,040,000.00 | $ 22,470,000 | ||||
| Asset retirement obligation | 24,152,000 | 22,195,000 | ||||
| Acquisition of ASM, net | 6,244,000 | $ 0 | ||||
| Secured Debt | Commitment Letter | ||||||
| Other Commitments [Line Items] | ||||||
| Aggregate principal amount | $ 250,000,000 | |||||
| Acquisition of ASM, net | 3,750,000 | |||||
| Mining Properties and Mineral Rights | ||||||
| Other Commitments [Line Items] | ||||||
| Renewal costs | 890,000 | |||||
| Canyon Project | ||||||
| Other Commitments [Line Items] | ||||||
| Asset retirement obligation | $ 52,350,000 | $ 50,490,000 | ||||
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- Definition Loss Contingency, Damages Held In Escrow, Value No definition available.
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- Definition Loss Contingency, Licensing Condition, Obligated Stevedoring Charge Per Tonne No definition available.
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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of damages paid to the plaintiff in the legal matter. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The cash outflow for loan and debt issuance costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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