Geographic Regions (Tables)

12 Months Ended

Sep. 30, 2020

Segments Geographical Areas [Abstract]

Schedule of Revenues, Operating Income (Loss) and Identifiable Assets by Geographic Region

We have continuing operations in the United States and China, as well as satellite offices in Europe and Asia. Revenues, operating income (loss) and identifiable assets by geographic region are as follows (in thousands):

	Years Ended September 30,
	2020			2019		2018
Net revenue:
United States	$	48,089		$	65,942	$	72,753
China		13,510			9,500		17,634
Other		3,864			9,593		9,666
	$	65,463		$	85,035	$	100,053
Operating income (loss):
United States	$	(5,814	)	$	726	$	2,755
China		4,744			3,686		5,445
Other		585			504		(2,128	)
	$	(485	)	$	4,916	$	6,072

	As of September 30,
	2020		2019
Net property, plant and equipment:
United States	$	11,804	$	9,893
China		191		236
Other		—		88
	$	11,995	$	10,217