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Related Party Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 29, 2021 | Dec. 18, 2013 | Dec. 31, 2025 | Dec. 31, 2024 | Feb. 06, 2026 | Oct. 08, 2025 | Oct. 10, 2023 | May 26, 2023
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Series B preferred shares conversion to common shares (in shares) |  |  | 1,250,000 |  |  |  |  |
Notes converted to common stock |  |  | $ 0 | $ 9,001 |  |  |  |
Merger Agreement | Harmattan Energy Ltd |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Series B preferred shares conversion to common shares (in shares) |  |  |  |  |  |  |  | 41,580
Related party | Harmattan Energy Ltd |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares, issued (in shares) |  |  |  |  |  | 17,820 | 39,600 | 19,800
Series B preferred shares conversion to common shares (in shares) |  |  |  |  |  |  |  | 77,220
Investment percentage |  |  | 1.79% | 1.79% |  |  |  |
Related party | Harmattan Energy Ltd | Soluna Computing Inc |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Payment of related party | $ 725 |  |  |  |  |  |  |
Related party | MEOH Power, Inc. |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares issued, price per share (in dollars per share) |  | $ 0.07 |  |  |  |  |  |
Professional and contract services expense |  | $ 380 |  |  |  |  |  |
Notes converted to common stock |  |  | $ 403 | $ 385 |  |  |  |
Related party | Subsequent event | Harmattan Energy Ltd |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares, issued (in shares) |  |  |  |  | 10,692 |  |  |
Series B preferred shares conversion to common shares (in shares) |  |  |  |  | 30,888 |  |  |

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