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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Oct. 31, 2024
Goodwill And Intangible Assets
Goodwill	$ 4,075		$ 4,075
Intangible assets, net	14,455		14,779
Versa & Bridgeport Fuel Cell Project Acquisitions
Goodwill And Intangible Assets
Intangible assets, net	14,500		14,800
Versa Acquisition
Goodwill And Intangible Assets
Goodwill	4,100		$ 4,100
Bridgeport Fuel Cell, LLC
Goodwill And Intangible Assets
Amortization expenses	$ 300	$ 300

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Goodwill and intangible assets.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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