v3.26.1
Strategic Restructuring - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 15, 2026
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Jun. 14, 2026
Restructuring Cost and Reserve [Line Items]            
Stock-based compensation expense   $ 7,810,000 $ 2,581,000 $ 14,758,000 $ 7,040,000  
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       3,300,000    
Stock-based compensation expense   5,698,000 1,727,000 10,015,000 4,673,000  
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       1,900,000    
Stock-based compensation expense   2,112,000 $ 854,000 4,743,000 $ 2,367,000  
Employee Severance            
Restructuring Cost and Reserve [Line Items]            
Percentage of workforce reduction 50.00%          
Estimated non-cash stock-based compensation expense   3,400,000   3,400,000    
Restructuring charges       5,150,000    
Estimated payment of aggregate cash retention bonus awards           $ 1,600,000
Non-cash stock-based compensation expense, vesting of performance-based equity retention awards       2,800,000    
Non-cash stock-based compensation expense, recognized upon vesting for milestone       1,400,000    
Restructuring and Related Cost, Cost Incurred to Date   $ 5,200,000   5,200,000    
Employee Severance | Performance-Based Cash Retention Awards            
Restructuring Cost and Reserve [Line Items]            
Stock-based compensation expense       0    
Employee Severance | Performance-Based Equity Retention Awards            
Restructuring Cost and Reserve [Line Items]            
Stock-based compensation expense       0    
Employee Termination Benefit Expense            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       $ 5,200,000    
Maximum | Employee Severance            
Restructuring Cost and Reserve [Line Items]            
Estimated restructuring costs           6,100,000
Estimated non-cash stock-based compensation expense           5,500,000
Minimum | Employee Severance            
Restructuring Cost and Reserve [Line Items]            
Estimated restructuring costs           5,600,000
Estimated non-cash stock-based compensation expense           $ 5,000,000