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Inventory (Tables)
12 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
September 30,
20212020
Raw materials$5,819 $3,232 
Work in process6,848 4,894 
Finished goods1,554 1,186 
Parts and supplies54,352 15,577 
Total inventories$68,573 $24,889