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Inventory
12 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
16. INVENTORY
     
Inventories consist of the following components:
September 30,
20202019
Raw materials$3,232 $4,104 
Work in process4,894 6,301 
Finished goods1,186 1,861 
Parts and supplies15,577 9,277 
Total inventories$24,889 $21,543