Notes Payable - Additional Information (Details)					3 Months Ended		6 Months Ended
	Dec. 22, 2023 USD ($) $ / shares shares	Apr. 04, 2023 USD ($)	Jun. 15, 2022 USD ($)	Dec. 30, 2021 USD ($)	Apr. 30, 2024 USD ($) $ / shares shares	Apr. 30, 2023 USD ($)	Apr. 30, 2024 USD ($) $ / shares shares	Apr. 30, 2023 USD ($)	Apr. 30, 2024 $ / shares	Oct. 31, 2023 USD ($)	Dec. 15, 2022 USD ($)	Jun. 30, 2022 USD ($) shares
Debt Instrument [Line Items]
Loss on extinguishment of debt							$ (366,000)
Note payable current										$ 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		$ 34					$ 23
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
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		$ 400,000
Effective interest rate of outstanding debt					12.38%		12.38%
Line of credit, maturity date	Jan. 01, 2028
End of term fee percentage	5.50%
End of term charge	$ 0.7
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										$ 600,000
Interest expense					$ 700,000	$ 400,000	$ 1,300,000	$ 900,000
Amortization of debt discount					100,000	100,000	300,000	$ 200,000
Borrowed amount					22,500,000		22,500,000			11,000,000
Debt discount and issuance costs					2,100,000		2,100,000			$ 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
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
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
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