Inventory

6 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Inventory

6.  Inventory

The components of inventories are as follows, in thousands:

	March 31, 2021			September 30, 2020
Purchased parts and raw materials	$	12,519		$	14,530
Work-in-process		3,694			3,074
Finished goods		3,997			3,942
		20,210			21,546
Excess and obsolete reserves		(3,821	)		(4,269	)
	$	16,389		$	17,277