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Inventory (Tables)
12 Months Ended
Sep. 30, 2024
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
September 30,
20242023
Raw materials$14,078 $14,334 
Work in process12,494 12,939 
Finished goods4,389 3,399 
Parts and supplies70,767 64,983 
Total inventories$101,728 $95,655