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v3.25.2

Debt (Details) $ / shares in Units, lb in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 05, 2023 lb | Feb. 29, 2024 shares | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 27, 2025 USD ($) | Feb. 14, 2023 USD ($) $ / shares
Notes payable |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate (as a percent) | 9.00% |  |  |  |  |  | 10.00% |
Interest expense |  |  | $ 240,000 | $ 445,000 | $ 586,000 | $ 626,000 |  |
Uranium loan | lb | 200 |  |  |  |  |  |  |
Term of loan agreement | 12 months |  |  |  |  |  |  |
Notes payable | Cash Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Provide for a cash facility |  |  |  |  |  |  | $ 3,600,000 |
Notes payable | Secured Convertible Notes due February 2025 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Repayments of convertible debt |  |  |  |  | $ 10,054,000 |  |  |
Convertible debt |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Face amount |  |  |  |  |  |  |  | $ 60,000,000
Conversion price (in USD per share) | $ / shares |  |  |  |  |  |  |  | $ 2.91
Interest rate (as a percent) |  |  |  |  |  |  |  | 8.00%
Unamortized premium |  |  |  |  |  |  |  | $ 3,813,000
Long-term debt |  |  |  |  |  |  |  | $ 56,187,000
Accretion expense |  |  |  |  |  | 64,000 |  |
Interest expense |  |  |  | $ 0 |  | $ 218,000 |  |
Shares issued during debt conversion | shares |  | 6,872,143 |  |  |  |  |  |

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