v3.25.2
Notes Payable - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Dec. 22, 2023
Jul. 31, 2025
Jul. 31, 2024
Jul. 31, 2025
Jul. 31, 2024
Dec. 18, 2024
Oct. 31, 2024
Dec. 30, 2021
Debt Instrument [Line Items]                
Loss on extinguishment of debt         $ (366,000)      
Note payable current   $ 5,412,000   $ 5,412,000     $ 699,000  
Amended Loan Agreement                
Debt Instrument [Line Items]                
Warrant issued to purchase preferred shares 138,696              
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              
Hercules Capital | Loan and Security Agreement                
Debt Instrument [Line Items]                
Note payable current   $ 5,400,000   $ 5,400,000        
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 | 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              
End of term fee percentage 5.50%              
End of term charge $ 700,000     $ 700,000        
Debt instrument, interest rate 9.25%              
Payment-in-kind interest rate 1.15%              
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
Note payable current             $ 700,000  
Interest expense   $ 800,000 $ 800,000 2,200,000 2,000,000      
Amortization of debt discount   200,000 100,000 400,000 400,000      
Borrowed amount   22,500,000   22,500,000        
Debt discount and issuance costs   2,100,000   2,100,000        
Advance Subject to Achievement of Specified Interim Milestone [Member] | 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   $ 27,500,000        
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 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 | 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 | 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 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    
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