Business Segment Information (Tables)

6 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Schedule of Business Segment Information

Information concerning our business segments is as follows, in thousands:

	Three Months Ended March 31,						Six Months Ended March 31,
	2021			2020			2021			2020
Net Revenues:
Semiconductor	$	17,119		$	11,992		$	32,694		$	29,224
Material and Substrate		2,671			2,468			5,071			5,285
Non-segment related		—			—			—			643
	$	19,790		$	14,460		$	37,765		$	35,152
Operating income (loss):
Semiconductor	$	1,665		$	(18	)	$	3,862		$	2,704
Material and Substrate		(253	)		421			(319	)		955
Non-segment related		(1,241	)		(1,375	)		(2,318	)		(2,994	)
	$	171		$	(972	)	$	1,225		$	665

	March 31, 2021		September 30, 2020
Identifiable Assets:
Semiconductor	$	56,079	$	51,648
Material and Substrate		19,714		12,717
Non-segment related*		32,143		37,733
	$	107,936	$	102,098

* Non-segment related assets include cash, property, income tax assets and other assets.