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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2025 | Jul. 31, 2024 | Oct. 31, 2024
Goodwill And Intangible Assets |  |  |  |  |
Goodwill |  |  |  |  | $ 4,075
Intangible assets, net | $ 4,215 |  | $ 4,215 |  | 14,779
Impairment of goodwill | 4,100 |  | 4,100 |  |
Impairment of intangible assets | 9,300 |  | 9,300 |  |
Versa & Bridgeport Fuel Cell Project Acquisitions |  |  |  |  |
Goodwill And Intangible Assets |  |  |  |  |
Intangible assets, net |  |  |  |  | 14,800
Versa Acquisition |  |  |  |  |
Goodwill And Intangible Assets |  |  |  |  |
Goodwill |  |  |  |  | $ 4,100
Bridgeport Fuel Cell, LLC |  |  |  |  |
Goodwill And Intangible Assets |  |  |  |  |
Amortization expenses | $ 300 | $ 300 | $ 1,000 | $ 1,000 |

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