The maximum additional amount of offering price under the financial offering programs.

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Amount of cash outflow for payment fees on sale of stock transaction.

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Amount of cash outflow for payment commission on sale of stock transaction.

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The remaining offering amount available under the financial offering programs.

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The contribution received upon completing a Technical Improvement Plan.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The cash inflow from the additional capital contribution to the entity.

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Cash received on stock transaction after deduction of issuance costs.

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Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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Number of new stock issued during the period.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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Nature of Business and Basis of Presentation (Details)				3 Months Ended					9 Months Ended
Nature of Business and Basis of Presentation (Details)	Dec. 27, 2024 USD ($)	Nov. 08, 2024 shares	Apr. 10, 2024 USD ($)	Jul. 31, 2025 USD ($) $ / shares shares	Apr. 30, 2025 shares	Jan. 31, 2025 shares	Jul. 31, 2024 USD ($) shares	Apr. 30, 2024 shares	Jul. 31, 2025 USD ($) $ / shares shares	Jul. 31, 2024 USD ($) shares	Nov. 07, 2024 shares	Oct. 31, 2024 USD ($) shares	Jan. 31, 2024 shares	Oct. 31, 2023 shares
Nature of Business and Basis of Presentation
Reverse stock split, conversion ratio		0.033
Common stock, shares outstanding (in shares) \| shares		20,375,932		29,645,294					29,645,294		611,278,662	20,375,932
Common stock, shares authorized (in shares) \| shares		1,000,000,000		1,000,000,000					1,000,000,000			1,000,000,000
Preferred shares authorized \| shares		250,000
Cash and cash equivalents, unrestricted				$ 174,662,000			$ 159,347,000		$ 174,662,000	$ 159,347,000		$ 148,133,000
Investments - short-term												109,123,000
Net proceeds from issuance of common stock									51,626,000	$ 71,739,000
U.S. Treasury Securities
Nature of Business and Basis of Presentation
Investments - short-term				$ 0					$ 0			$ 109,100,000
Common Stock
Nature of Business and Basis of Presentation
Common stock, shares outstanding (in shares) \| shares				29,645,294	22,776,193	21,143,772	18,461,340	15,280,202	29,645,294	18,461,340		20,375,932	15,062,045	15,020,872
Shares sold during the period \| shares				6,846,992	1,626,319	690,711	3,174,005	215,457
Amended Open Market Sales Agreement
Nature of Business and Basis of Presentation
Aggregate offering price	$ 405,000,000
Additional amount of offering price	200,000,000
Amended Open Market Sales Agreement \| Common Stock
Nature of Business and Basis of Presentation
Amount remaining under the amended sales agreement	$ 204,922,876.65
Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC \| Amended Open Market Sales Agreement
Nature of Business and Basis of Presentation
Aggregate offering price			$ 300,000,000
Shares sold during the period \| shares				6,800,000					9,200,000
Average sale of stock price per share \| $ / shares				$ 5.7					$ 5.84
Gross proceeds from sale of common stock				$ 39,000,000					$ 53,500,000
Net proceeds from issuance of common stock				38,100,000					51,600,000
Sales commission				800,000					1,100,000
Payments of fees				$ 100,000					800,000
Groton Project
Nature of Business and Basis of Presentation
Contribution received under the Technical Improvement Plan									$ 4,000,000