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Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2024
Oct. 31, 2023
Oct. 31, 2022
Operating Loss Carryforwards [Line Items]      
Income tax expense (benefit) $ 25 $ 581 $ 819
Franchise tax expense 500 900 $ 1,000
Unrecognized Tax Benefits 0 0  
Unrecognized tax benefits, provision for interest or penalties 0 $ 0  
Federal      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards 1,060,000    
Net operating loss carryforwards subject to expiration 549,000    
Net operating loss carryforwards not subject to expiration 506,000    
NOL carryforward for financial statement purposes 588,000    
State      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards subject to expiration 585,100    
Available tax credits $ 13,700