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v3.26.1

Subsequent Events (Details) $ / shares in Units, $ in Thousands | Feb. 11, 2026 USD ($) board_member shares | Jan. 21, 2026 USD ($) $ / shares shares | Jan. 23, 2025 shares | Jul. 22, 2024 USD ($) shares | Dec. 31, 2025 | Dec. 16, 2025 | May 07, 2025 $ / shares | Jun. 30, 2024 | Oct. 02, 2022 $ / shares | May 13, 2020
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Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Stock price (usd per share) | $ / shares |  |  |  |  |  |  | $ 0.24 |  | $ 10.00 |
Conversion of stock, shares issued (in shares) |  |  | 1,652,178 |  |  |  |  |  |  |
LanzaJet |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 53.00% | 53.16% |  | 37.01% |  | 37.50%
Vellar |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued in transaction (in shares) |  |  |  | 2,990,000 |  |  |  |  |  |
Purchase price | $ |  |  |  | $ 7,500 |  |  |  |  |  |
Subsequent Event | LanzaJet |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Minimum interest to designate board member | 5.00% |  |  |  |  |  |  |  |  |
Ownership percentage | 46.00% |  |  |  |  |  |  |  |  |
Subsequent Event | LanzaJet |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Total number of board members | board_member | 7 |  |  |  |  |  |  |  |  |
Subsequent Event | LanzaJet Notes |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Senior notes | $ | $ 25,000 |  |  |  |  |  |  |  |  |
Subsequent Event | LanzaTech | LanzaJet |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Designated board member | board_member | 1 |  |  |  |  |  |  |  |  |
Subsequent Event | Private Placement |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued in transaction (in shares) |  | 4,000,000 |  |  |  |  |  |  |  |
Stock price (usd per share) | $ / shares |  | $ 5.00 |  |  |  |  |  |  |  |
Purchase price | $ |  | $ 20,000 |  |  |  |  |  |  |  |
Conversion of preferred stock into common stock (in shares) |  | 510,968 |  |  |  |  |  |  |  |
Subsequent Event | Series A Convertible Senior Preferred Stock |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  | 3,250,322 |  |  |  |  |  |  |  |
Subsequent Event | LanzaJet Series A Stock Purchase Agreement |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Equity exchange conversion ratio | 1 |  |  |  |  |  |  |  |  |
Subsequent Event | LanzaJet Series A Stock Purchase Agreement | LanzaJet |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase price | $ | $ 2,000 |  |  |  |  |  |  |  |  |
Conversion of stock, converted (in shares) | 60,316,250 |  |  |  |  |  |  |  |  |
Subsequent Event | LanzaJet Series A Stock Purchase Agreement | Common Class C | LanzaJet |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Conversion of stock, shares issued (in shares) | 60,316,250 |  |  |  |  |  |  |  |  |
Subsequent Event | LanzaJet Series A Stock Purchase Agreement | Series A Preferred Stock | LanzaJet |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued in transaction (in shares) | 455,522 |  |  |  |  |  |  |  |  |

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