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INVENTORIES (Details) - USD ($)
$ in Thousands
Apr. 30, 2021
Oct. 31, 2020
INVENTORIES    
Purchased parts and sub-assemblies $ 33,834 $ 30,390
Work-in-process 15,978 12,635
Finished goods 95,496 106,839
Inventories $ 145,308 $ 149,864