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Notes Payable - Additional Information (Details) - USD ($)			3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 20, 2026	Dec. 22, 2023	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025	Oct. 31, 2024	Oct. 31, 2025	Dec. 18, 2024	Dec. 30, 2021
Debt Instrument [Line Items]
Loss on extinguishment of debt					$ (488,000)
Note payable current			$ 193,000		193,000			$ 8,002,000
First Amended Loan Agreement
Debt Instrument [Line Items]
Warrants, exercise price per share		$ 7.21
Percentage of aggregate principal amount of term loan advance to purchase number of common shares		2.00%
Warrants exercisable period		7 years
Second Amended Loan Agreement
Debt Instrument [Line Items]
Warrant issued to purchase preferred shares	204,248
Warrants, exercise price per share	$ 9.18
Unrestricted cash			10,000,000		10,000,000
Percentage of aggregate principal amount of term loan advance to purchase number of common shares	1.50%
Warrants exercisable period	7 years
Hercules Capital | Loan and Security Agreement
Debt Instrument [Line Items]
Note payable current								$ 8,000,000
Interest expense			700,000	$ 700,000	1,500,000	$ 1,500,000
Amortization of debt discount			200,000	$ 100,000	300,000	$ 300,000
Principal payments due in next twelve months			0		0
Hercules Capital | Second Amended Loan Agreement
Debt Instrument [Line Items]
Borrowed amount			25,000,000		25,000,000
Debt discount and issuance costs			2,900,000		2,900,000
Term Loan | First Amendment to Amended and Restated Loan and Security Agreement [Member]
Debt Instrument [Line Items]
Term loan facility aggregate principal amount									$ 50,000,000
Term Loan | First 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%
Line of credit, maturity date		Jan. 01, 2028
End of term fee percentage		5.50%
End of term charge		$ 700,000
Term Loan | Second Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount	$ 125,000,000	50,000,000	100,000,000		100,000,000
Loss on extinguishment of debt			0		500,000
End of term fee percentage	5.95%
Percentage of total commitment amount	1.50%
Total commitment amount	$ 125,000,000,000
Uncommitted Tranche | Second Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount	$ 25,000,000
2021 Loan and Security Agreement | Hercules Capital
Debt Instrument [Line Items]
Term loan facility aggregate principal amount										$ 20,000,000
2026 Term Loan
Debt Instrument [Line Items]
Term loan maturity date	Jan. 01, 2030
Principal payments due in next twelve months			$ 0		$ 0
2026 Term Loan | Second Amended Loan Agreement
Debt Instrument [Line Items]
Term loan annual interest rate	2.25%
Effective interest rate of outstanding debt			12.10%		12.10%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	Wall Street Journal [Member]
Debt instrument, interest rate	9.25%
Loan amortization date					Apr. 30, 2026		Oct. 31, 2024
2026 Term Loan | Maximum | Second Amended Loan Agreement
Debt Instrument [Line Items]
Percentage of facility charge on amount borrowed	0.75%
Debt instrument, interest rate	10.25%
2026 Term Loan | Minimum | Second Amended Loan Agreement
Debt Instrument [Line Items]
Percentage of facility charge on amount borrowed	0.50%
Tranche 1 Advance | Term Loan | First Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount		$ 50,000,000
Warrant issued to purchase preferred shares		62,413
Proceeds from line of credit		$ 22,500,000
Tranche 1 Advance | Term Loan | Second Amended Loan Agreement
Debt Instrument [Line Items]
Warrant issued to purchase preferred shares			40,850		40,850
Tranche 1 Advance | Term Loan | Second Amended Loan Agreement | Hercules Warrants
Debt Instrument [Line Items]
Borrowed amount	$ 25,000,000
Advance on loan allocated to warrants	300,000
Tranche 3 Advance | Term Loan | First Amendment to Amended and Restated Loan and Security Agreement [Member]
Debt Instrument [Line Items]
Term loan facility aggregate principal amount									27,500,000
Percentage of facility charge on amount borrowed		0.75%
Tranche 3 Advance | Term Loan | First 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 | First Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount		$ 7,500,000
Period Within Loan Disbursements to be Made		60 years
Line of credit, maturity date		Mar. 31, 2025
Tranche three advance subject to achievement of specified interim milestone | Term Loan | First Amendment to Amended and Restated Loan and Security Agreement [Member]
Debt Instrument [Line Items]
Term loan facility aggregate principal amount									7,500,000
Tranche 2 to Tranche 3 | Term Loan | First Amendment to Amended and Restated Loan and Security Agreement [Member]
Debt Instrument [Line Items]
Term loan facility aggregate principal amount									$ 7,500,000
Tranche One | Term Loan | Second Amended Loan Agreement
Debt Instrument [Line Items]
Proceeds from line of credit	25,000,000
Tranche Two | Term Loan | Second Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount	$ 35,000,000
Line of credit, maturity date	Mar. 31, 2027
Tranche Three | Term Loan | Second Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount	$ 20,000,000
Period Within Loan Disbursements to be Made	90 days
Line of credit, maturity date	Dec. 15, 2027
Tranche Four | Term Loan | Second Amended Loan Agreement
Debt Instrument [Line Items]
Term loan facility aggregate principal amount	$ 20,000,000
Period Within Loan Disbursements to be Made	90 days
Line of credit, maturity date	Dec. 15, 2028

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