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LEASES (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2022
Jan. 31, 2021
LEASES    
Operating lease expense $ 1.3 $ 1.3
Weighted-average remaining term 3 years 8 months 12 days  
Weighted-average discount rate 1.70%  
Minimum    
LEASES    
Lease term (in years) 2 years  
Maximum    
LEASES    
Lease term (in years) 5 years