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SUPPLEMENTAL BALANCE SHEET INFORMATION - Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Sep. 30, 2023
Inventories    
Raw materials $ 2,007 $ 2,259
Work in progress 86 124
Finished goods 4,540 4,439
Research Model Inventory 42,718 52,524
Total 49,351 59,346
Less: Obsolescence reserve (3,945) (3,244)
Inventories, net $ 45,406 $ 56,102