Notes Payable - Additional Information (Details)						3 Months Ended	12 Months Ended
	Oct. 31, 2024 USD ($) $ / shares shares	Dec. 22, 2023 USD ($) $ / shares shares	Apr. 04, 2023 USD ($)	Jun. 15, 2022 USD ($)	Dec. 30, 2021 USD ($)	Apr. 30, 2023 USD ($)	Oct. 31, 2024 USD ($) $ / shares shares	Oct. 31, 2023 USD ($)	Oct. 31, 2024 $ / shares	Dec. 15, 2022 USD ($)	Jun. 30, 2022 USD ($) shares
Debt Instrument [Line Items]
Loss on extinguishment of debt							$ (366,000)
Note payable current	$ 699,000						$ 699,000	$ 562,000
Warrants, exercise price per share | $ / shares	$ 11.5						$ 11.5
Old Hercules Warrants
Debt Instrument [Line Items]
Warrants exercisable period	10 years						10 years
Warrants, exercise price per share | $ / shares									$ 2.632
Loan and Security Agreement | Old Hercules Warrants
Debt Instrument [Line Items]
Exercise price equal to percentage of aggregate amount of term loans							2.50%
Loan and Security Agreement | Old Hercules Warrants | Class C Preferred Shares
Debt Instrument [Line Items]
Warrant issued to purchase preferred shares | shares	84,714						84,714				48,978
Preferred share warrants fair value	$ 34,000						$ 34,000				$ 23,000
Amended Loan Agreement
Debt Instrument [Line Items]
Warrant issued to purchase preferred shares | shares		138,696
Warrants, exercise price per share | $ / shares		$ 7.21
Percentage of aggregate principal amount of term loan advance to purchase number of common shares		2.00%
Warrants exercisable period		7 years
Hercules Capital | Amended Loan Agreement
Debt Instrument [Line Items]
Interest expense							2,200,000	1,800,000
Amortization of debt discount							600,000	$ 400,000
Borrowed amount	22,500,000						22,500,000
Debt discount and issuance costs	$ 2,200,000						2,200,000
Term Loan | Amended Loan Agreement
Debt Instrument [Line Items]
Percentage of prepayment premium of principal amount outstanding of the closing date		3.00%
Percentage of prepayment premium of principal amount outstanding prior to twenty-four months		2.00%
Percentage of prepayment premium of principal amount outstanding prior to maturity date		1.00%
Loss on extinguishment of debt							$ 400,000
Effective interest rate of outstanding debt	11.63%						11.63%
Line of credit, maturity date	Jan. 01, 2028	Jan. 01, 2028
End of term fee percentage	5.50%
End of term charge	$ 700,000
Debt instrument, interest rate		9.25%
Payment-in-kind interest rate		1.15%
Loan amortization date		Jul. 01, 2025
Percentage of total commitment amount		2.00%
Total commitment amount		$ 50,000,000
Term Loan | Wall Street Journal | Amended Loan Agreement
Debt Instrument [Line Items]
Term loan annual interest rate		0.75%
Term Loan | Maximum | Wall Street Journal | Amended Loan Agreement
Debt Instrument [Line Items]
Debt instrument, interest rate		9.75%
2021 Loan and Security Agreement | Hercules Capital
Debt Instrument [Line Items]
Term loan facility aggregate principal amount					$ 20,000,000
Percentage of aggregate principle amount of term loan advances amount fee					6.35%
Term loan maturity date					Jul. 01, 2025
Term loan annual interest rate					8.25%
Term loan reduced annual interest rate					8.15%
Percentage of prepayment premium of principal amount outstanding of the closing date					3.00%
Percentage of prepayment premium of principal amount outstanding prior to twenty-four months					2.00%
Percentage of prepayment premium of principal amount outstanding prior to maturity date					1.00%
Effective interest rate of outstanding debt								18.30%
Note payable current	700,000						$ 700,000	$ 600,000
Borrowed amount	22,500,000						22,500,000	11,000,000
Debt discount and issuance costs	2,200,000						2,200,000	$ 1,100,000
2021 Loan and Security Agreement | Hercules Capital | Prime Rate
Debt Instrument [Line Items]
Term loan annual interest rate					3.25%
2021 Loan and Security Agreement | Tranche One | Hercules Capital
Debt Instrument [Line Items]
Term loan facility aggregate principal amount					$ 7,000,000
2021 Loan and Security Agreement | Tranche Two | Hercules Capital
Debt Instrument [Line Items]
Term loan facility aggregate principal amount				$ 4,000,000
Term loan facility, drawn term				2022-06
2021 Loan and Security Agreement | Tranche Three | Hercules Capital
Debt Instrument [Line Items]
Term loan facility aggregate principal amount										$ 9,000,000
April 2023 Notes
Debt Instrument [Line Items]
Term loan maturity date			Jul. 31, 2023
Loss on extinguishment of debt						$ 0
Borrowed amount			$ 8,000,000
Interest free period			45 days
Fair value of debt instrument			$ 8,000,000
Accrue interest rate percentage			15.00%
April 2023 Notes | Minimum
Debt Instrument [Line Items]
Aggregate sale of convertible promissory notes, warrants, preferred shares, common shares, or combined thereof			$ 20,000,000
Tranche 1 Advance | Term Loan | Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount	50,000,000						50,000,000
Warrant issued to purchase preferred shares | shares		62,413
Proceeds from line of credit	22,500,000
Tranche 1 Advance | Term Loan | Amended Loan Agreement | Hercules Warrants
Debt Instrument [Line Items]
Borrowed amount	22,500,000						22,500,000
Advance on loan allocated to warrants							300,000
Tranche 3 Advance | Term Loan | Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount	$ 20,000,000						20,000,000
Percentage of facility charge on amount borrowed	0.75%
Applied to Refinance of Amount Outstanding | Term Loan | Prior Loan Agreement
Debt Instrument [Line Items]
Proceeds from line of credit	$ 8,600,000
Tranche 2 Advance Subject to Achievement of Specified Interim Milestone | Term Loan | Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount	$ 7,500,000						$ 7,500,000
Period Within Loan Disbursements to be Made	60 days
Line of credit, maturity date	Mar. 31, 2025
If Interim Milestone and Certain Clinical Milestones Achieved and No Default | Term Loan | Amended Loan Agreement
Debt Instrument [Line Items]
Loan amortization date		Jul. 01, 2026
If Interim Milestone Achieved and No Default | Term Loan | Amended Loan Agreement
Debt Instrument [Line Items]
Loan amortization date		Jan. 01, 2026