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v3.25.0.1

Debt (Details) $ / shares in Units, pound_of_uranium in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 29, 2024 shares | Dec. 31, 2024 USD ($) pound_of_uranium | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Feb. 14, 2023 USD ($) $ / shares
Debt Instrument [Line Items] |  |  |  |  |
Interest expense |  | $ 1,735,000 | $ 3,503,000 |  |
Repayments of convertible debt |  | 0 | 40,000,000 | $ 0 |
Convertible debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Shares issued for conversion of convertible debt (in shares) | shares | 6,872,143 |  |  |  |
Secured Convertible Notes due February 2025 | Convertible debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount |  |  |  |  | $ 60,000,000
Conversion price (in USD per share) | $ / shares |  |  |  |  | $ 2.9103
Interest rate (as a percent) |  |  |  |  | 8.00%
Premium related to conversion |  |  |  |  | $ 3,813,000
Debt instrument fair value |  |  |  |  | $ 56,187,000
Accretion expense |  |  | 3,052,000 |  |
Repayments of convertible debt |  |  | 40,000,000 |  |
Convertible debt |  |  | $ 19,239,000 |  |
Shares issued for conversion of convertible debt (in shares) | shares | 6,872,143 |  |  |  |
Uranium Loan | Notes payable |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount |  | $ 20,108,000 |  |  |
Uranium Loan | pound_of_uranium |  | 200 |  |  |
Interest rate of funds borrowed (as a percent) |  | 9.00% |  |  |
Term of loan agreement |  | 12 months |  |  |
Accrued interest |  | $ 1,531,000 |  |  |

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