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Inventory (Tables)
9 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories consist of the following components:
June 30,September 30,
20222021
Raw materials$10,164 $5,819 
Work in process9,074 6,848 
Finished goods1,903 1,554 
Parts and supplies71,621 54,352 
Total inventories$92,762 $68,573