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INVENTORIES (Details) - USD ($)
$ in Thousands
Apr. 30, 2020
Oct. 31, 2019
INVENTORIES    
Purchased parts and sub-assemblies $ 31,192 $ 32,074
Work-in-process 15,644 20,901
Finished goods 106,028 95,876
Inventories $ 152,864 $ 148,851