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Stockholders' Equity and Warrant Liabilities (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 31, 2024 | Apr. 10, 2024 | Jul. 12, 2022 | Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 11, 2023 | Oct. 10, 2023
Stockholders' Equity and Warrant Liabilities |  |  |  |  |  |  |  |
Number of incremental common stock shares approved |  |  |  |  |  |  |  | 500,000,000
Common stock, shares authorized (in shares) | 1,000,000,000 |  |  | 1,000,000,000 | 1,000,000,000 |  | 1,000,000,000 | 500,000,000
Common Stock |  |  |  |  |  |  |  |
Stockholders' Equity and Warrant Liabilities |  |  |  |  |  |  |  |
Shares sold during the period |  |  |  | 5,302,378 | 1,477,361 | 1,279,897 |  |
Amended Open Market Sales Agreement | 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 |  |  |  |  |  |  |  |
Stockholders' Equity and Warrant Liabilities |  |  |  |  |  |  |  |
Shares sold during the period |  |  |  | 5,300,000 |  |  |  |
Percentage of sales commission |  |  | 2.00% |  |  |  |  |
Gross proceeds from issuance of common stock to date under the amended sales agreement | $ 95.1 |  |  | $ 95.1 |  |  |  |
Amended Open Market Sales Agreement | 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 | Common Stock |  |  |  |  |  |  |  |
Stockholders' Equity and Warrant Liabilities |  |  |  |  |  |  |  |
Shares sold during the period | 5,300,000 |  |  |  |  |  |  |
Percentage of sales commission |  | 2.00% |  |  |  |  |  |
Aggregate offering price |  | $ 300.0 |  |  |  |  |  |
Average sale price per share for sales to date under the amended sales agreement | $ 17.93 |  |  | $ 17.93 | $ 67.49 |  |  |
Gross proceeds from issuance of common stock to date under the amended sales agreement | $ 95.1 |  |  | $ 95.1 | $ 99.7 |  |  |
Common stock issuance, net of fees | 92.6 |  |  |  | 97.4 |  |  |
Sales commission | 1.9 |  |  |  |  |  |  |
Payments of underwriting discounts and commissions | 0.6 |  |  |  | $ 2.3 |  |  |
Number of shares sold to date |  |  |  |  | 1,500,000 |  |  |
Offering price | $ 204.9 |  |  | $ 204.9 |  |  |  |
Amended Open Market Sales Agreement | Maximum | 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 | Common Stock |  |  |  |  |  |  |  |
Stockholders' Equity and Warrant Liabilities |  |  |  |  |  |  |  |
Shares sold during the period |  |  | 3,200,000 |  |  |  |  |

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