Inventory

6 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventory

6.  Inventory

The components of inventories are as follows, in thousands:

	March 31, 2020			September 30, 2019
Purchased parts and raw materials	$	14,200		$	15,192
Work-in-process		4,215			4,215
Finished goods		3,361			3,183
		21,776			22,590
Excess and obsolete reserves		(4,444	)		(5,058	)
	$	17,332		$	17,532