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SUPPLEMENTAL FINANCIAL INFORMATION | 6 Months Ended
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Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplemental Financial Information | SUPPLEMENTAL FINANCIAL INFORMATION The components of other income are as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Unrealized gain (loss) on marketable securities | $ | 1 |  |  | $ | 445 |  |  | $ | (851) |  |  | $ | 985 |
Realized gain on maturities of marketable securities | 262 |  |  | 649 |  |  | 450 |  |  | 861 |
Foreign exchange gain (loss) | (93) |  |  | 349 |  |  | (1,516) |  |  | (353) |
Interest income, net and other | 1,336 |  |  | 1,180 |  |  | 1,932 |  |  | 2,747 |
Other income | $ | 1,506 |  |  | $ | 2,623 |  |  | $ | 15 |  |  | $ | 4,240 |
The components of accounts payable and accrued liabilities are as follows:
| June 30, 2025 |  | December 31, 2024
Mine closure redundancy | $ | 2,967 |  |  | $ | 9,169 |
Accounts payable | 4,913 |  |  | 7,508 |
Accrued operating expenses | 5,844 |  |  | 6,507 |
Accrued payroll liabilities | 4,093 |  |  | 6,558 |
Accrued capital expenditures | 3,413 |  |  | — |
Accrued taxes | 929 |  |  | 1,673 |
Deferred revenue | — |  |  | 813 |
Total accounts payable and accrued liabilities | $ | 22,159 |  |  | $ | 32,228 |

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