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Inventory
6 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
10. INVENTORY

  
Inventories consist of the following components:

March 31,September 30,
20202019
Raw materials$3,662  $4,104  
Work in process5,704  6,301  
Finished goods1,384  1,861  
Parts and supplies11,538  9,277  
Total inventories$22,288  $21,543