Intangible Assets - Gross Carrying Amount (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
Sep. 30, 2025 |
|---|---|---|---|
| Intangible Assets | |||
| Gross Carrying Amount | $ 34,707 | $ 34,795 | |
| Accumulated Amortization | (6,476) | (5,567) | |
| Total | 28,231 | 29,228 | $ 28,231 |
| Acquired technology | |||
| Intangible Assets | |||
| Gross Carrying Amount | 15,993 | 15,997 | |
| Accumulated Amortization | (3,439) | (3,047) | |
| Total | 12,554 | 12,950 | |
| Dry stack electrolyzer technology | |||
| Intangible Assets | |||
| Gross Carrying Amount | 11,351 | 11,352 | |
| Accumulated Amortization | (2,296) | (1,913) | |
| Total | 9,055 | 9,439 | |
| Customer relationships, trade name, and other | |||
| Intangible Assets | |||
| Gross Carrying Amount | 7,363 | 7,446 | |
| Accumulated Amortization | (741) | (607) | |
| Total | $ 6,622 | $ 6,839 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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