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Supplemental Financial Information - Schedule of Other Liabilities (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Other current liabilities: |  |
Operating lease, liability, current, statement of financial position [Extensible List] | Total other current liabilities | Total other current liabilities
Current portion of operating lease obligations | $ 2,560 | $ 2,081
Sales, use and other taxes payable | 1,485 | 2,325
Current portion of mine reclamation liability | 1,037 | 1,037
Other | 5,268 | 2,741
Total other current liabilities | $ 10,350 | $ 8,184
Other long-term liabilities: |  |
Operating lease, liability, noncurrent, statement of financial position [Extensible List] | Total other long-term liabilities | Total other long-term liabilities
Operating lease obligations, long-term | $ 7,186 | $ 7,460
Mine reclamation liabilities | 5,413 | 5,242
Other | 265 | 367
Total other long-term liabilities | 12,864 | 13,069
Tinuum Group, LLC |  |
Finite-Lived Intangible Assets [Line Items] |  |
Current liabilities | $ 1,700 | $ 1,700

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