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SUPPLEMENTAL BALANCE SHEET INFORMATION - Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Sep. 30, 2022
Inventories    
Raw materials $ 2,392 $ 1,757
Work in progress 72 186
Finished goods 4,762 4,933
Research Model Inventory 72,631 68,055
Total 79,857 74,931
Less: Obsolescence reserve (4,218) (3,490)
Inventories, net $ 75,639 $ 71,441