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Other Balance Sheet Information - Summary of Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials and purchased parts $ 28,546 $ 27,644
Work-in-process 5,885 4,787
Finished goods 43,321 27,967
Inventory, net 77,752 60,398
Reserves for excess and obsolete inventory $ 4,400 $ 3,700