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Inventory (Tables)
3 Months Ended
Dec. 31, 2023
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories consist of the following components:
December 31,September 30,
20232023
Raw materials$14,348 $14,334 
Work in process12,895 12,939 
Finished goods5,689 3,399 
Parts and supplies80,842 64,983 
Total inventories$113,774 $95,655