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
Dec. 31, 2021
Sep. 30, 2021
Inventory Disclosure [Abstract]    
Purchased parts and raw materials $ 17,056 $ 16,260
Work-in-process 5,396 4,865
Finished goods 5,793 5,055
Inventory, gross 28,245 26,180
Excess and obsolete reserves (4,130) (4,105)
Inventories $ 24,115 $ 22,075