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Inventory - Schedule of Components of Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Sep. 30, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 14,261 $ 13,354
Work in-process 9,921 8,381
Finished goods 5,565 3,790
Inventory balance at end of period $ 29,747 $ 25,525