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Leases - Additional Information (Details)
$ in Thousands, $ in Millions
 3 Months Ended 9 Months Ended
Feb. 20, 2023
ft²
Jan. 05, 2023
ft²
Jul. 31, 2023
USD ($)
Jul. 31, 2022
USD ($)
Jul. 31, 2023
USD ($)
Jul. 31, 2022
USD ($)
Jul. 31, 2023
CAD ($)
Jul. 31, 2023
USD ($)
Jan. 31, 2023
CAD ($)
Jan. 31, 2023
USD ($)
Oct. 31, 2022
USD ($)
Lessee Lease Description [Line Items]                      
Operating lease right-of-use assets, net               $ 8,690     $ 7,189
Operating lease liability               $ 9,945      
Operating lease expense     $ 400 $ 400 $ 1,159 $ 1,147          
Operating lease, weighted average remaining lease term             17 years 17 years      
Operating lease, weighted average discount rate             6.97% 6.97%      
Operating lease, payments     $ 300 $ 400 $ 911 $ 1,084          
Versa Power Systems, Ltd                      
Lessee Lease Description [Line Items]                      
Area of Additional Leased Space | ft² 18,627 48,000                  
Operating lease right-of-use assets, net             $ 0.2 $ 100 $ 2.7 $ 2,000  
Operating lease liability             $ 0.2 $ 100 $ 2.7 $ 2,000