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INVENTORIES - Components of Inventories (Detail) - USD ($)
$ in Thousands
Oct. 31, 2019
Jul. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 22,470 $ 21,322
Work-in-process 768 587
Finished goods 2,572 1,765
Inventories, net $ 25,810 $ 23,674