SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Other Cash Flow Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Other Significant Noncash Transactions [Line Items] | ||||
| Capital expenditures, not yet paid | $ 7,294 | $ 869 | $ 10,132 | $ 869 |
| Shares issued in relation to Offtake settlement | 4,800 | 0 | 4,800 | 0 |
| 2023 Convertible Debentures | ||||
| Other Significant Noncash Transactions [Line Items] | ||||
| Shares issued in relation to 2023 Convertible Debentures interest | 0 | 0 | 13,384 | 0 |
| Interest paid - Orion Convertible Loan | 0 | 0 | 5,295 | 0 |
| Orion Convertible Loan | ||||
| Other Significant Noncash Transactions [Line Items] | ||||
| Shares issued in relation to Orion Convertible Loan repayment | 0 | 0 | 5,250 | 0 |
| Interest paid - Orion Convertible Loan | $ 0 | $ 0 | $ 20,403 | $ 0 |