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Inventory (Tables)
12 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
September 30,
20232022
Raw materials$14,334 $12,504 
Work in process12,939 8,218 
Finished goods3,399 2,129 
Parts and supplies64,983 73,482 
Total inventories$95,655 $96,333