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Leases - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2022
Jan. 31, 2022
Apr. 30, 2021
Jan. 31, 2021
Apr. 30, 2022
Apr. 30, 2021
Oct. 31, 2021
Lessee Lease Description [Line Items]              
Operating lease ROU asset $ 7,658       $ 7,658   $ 8,109
Operating lease liability 8,655       8,655    
Accumulated deficit (1,336,092)       (1,336,092)   (1,265,251)
Finance lease, liability $ 80       $ 80   $ 102
Finance Lease, Liability, Statement of Financial Position [Extensible List] Current portion of long-term debt, Long-term debt and other liabilities       Current portion of long-term debt, Long-term debt and other liabilities   Current portion of long-term debt, Long-term debt and other liabilities
Operating lease expense   $ 400   $ 400 $ 779 $ 761  
Operating lease, weighted average remaining lease term 20 years       20 years    
Operating lease, weighted average discount rate 8.30%   8.30%   8.30% 8.30%  
Operating lease, payments $ 300   $ 300   $ 730 $ 586  
Minimum              
Lessee Lease Description [Line Items]              
Operating and finance lease, remaining lease term         1 year    
Maximum              
Lessee Lease Description [Line Items]              
Operating and finance lease, remaining lease term         26 years