Quarterly report pursuant to Section 13 or 15(d)

Inventories - Schedule of Components of Inventories (Details)

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Inventories - Schedule of Components of Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Sep. 30, 2021
Inventory Disclosure [Abstract]    
Purchased parts and raw materials $ 18,056 $ 16,260
Work-in-process 5,512 4,865
Finished goods 4,927 5,055
Inventory, gross 28,495 26,180
Excess and obsolete reserves (4,102) (4,105)
Inventories $ 24,393 $ 22,075