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Inventories and major vendors (Tables)
6 Months Ended
Apr. 30, 2018
Inventory Disclosure [Abstract]  
Components of Inventories
Inventories consist of the following (in thousands): 
 
 
 
April 30, 2018
 
October 31, 2017
 
 
 
 
 
 
 
 
 
Raw materials and supplies
 
$
2,850
 
$
2,520
 
Work in process
 
 
471
 
 
194
 
Finished goods
 
 
3,754
 
 
3,395
 
 
 
 
 
 
 
 
 
Totals
 
$
7,075
 
$
6,109