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SUPPLEMENTAL BALANCE SHEET INFORMATION - Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Sep. 30, 2023
Inventories    
Raw materials $ 2,071 $ 2,259
Work in progress 78 124
Finished goods 4,483 4,439
Research Model Inventory 34,866 52,524
Total 41,498 59,346
Less: Obsolescence reserve (2,814) (3,244)
Inventories, net $ 38,684 $ 56,102