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Inventories, Net (Tables)
 3 Months Ended
Jan. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories, net consists of the following:
 
April 30, 2020
 
October 31, 2019
Raw materials
$
27,623

 
$
26,653

Work in process
23,788

 
21,369

Finished goods
23,497

 
19,470

Reserves
(6,486
)
 
(3,945
)
Total inventories, net
$
68,422

 
$
63,547