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Prepaids and deposits (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Prepaids: |  |
Surety bond fees | $ 1,174 | $ 560
Insurance | 1,020 | 1,215
License fees | 393 | 405
Mining claims fees and permit fees | 217 | 569
Services | 126 | 22
Deposits | 182 | 182
Total | 3,112 | 2,953
Prepaids, non-current: |  |
Insurance | 22 | 37
Total | $ 22 | $ 37

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- Definition Prepaid Insurance, Noncurrent + References No definition available. + Details
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- Definition Prepaid Mining Claims, Current + References No definition available. + Details
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- Definition Prepaid Services, Current + References No definition available. + Details
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- Definition Prepaid Subscription and License Fees + References No definition available. + Details
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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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