Business Segments

12 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Business Segments

17. Business Segments

Upon the acquisition of Intersurface Dynamics in the second quarter of 2021 (see Note 2), we evaluated our organizational structure and concluded that we have two reportable business segments following the acquisition. Prior period amounts have been revised to conform to the current period segment reporting structure.

Our two reportable segments are as follows:

Semiconductor – We design, manufacture, sell and service thermal processing equipment and related controls for use by leading semiconductor manufacturers, and in electronics, automotive and other industries.

Material and Substrate – We produce consumables and machinery for lapping (fine abrading) and polishing of materials, such as sapphire substrates, optical components, silicon wafers, numerous types of crystal materials, ceramics and metal components. Our Material and Substrate segment includes our former SiC/LED segment in addition to Intersurface Dynamics, as they sell complementary products to a similar market.

Information concerning our business segments is as follows (in thousands):

	Years Ended September 30,
	2021			2020			2019
Net revenue:
Semiconductor	$	72,086		$	54,516		$	66,455
Material and Substrate		13,119			10,304			13,682
Non-segment related		—			643			4,898
	$	85,205		$	65,463		$	85,035
Operating income (loss):
Semiconductor	$	8,585		$	4,168		$	8,744
Material and Substrate		278			684			3,641
Non-segment related		(5,138	)		(5,337	)		(7,469	)
	$	3,725		$	(485	)	$	4,916

	Years Ended September 30,
	2021		2020		2019
Capital expenditures:
Semiconductor	$	2,264	$	912	$	379
Material and Substrate		695		1,724		171
Non-segment related		53		39		33
	$	3,012	$	2,675	$	583
Depreciation and amortization expense:
Semiconductor	$	905	$	821	$	828
Material and Substrate		438		197		136
Non-segment related		55		60		161
	$	1,398	$	1,078	$	1,125

	September 30, 2021		September 30, 2020
Identifiable assets:
Semiconductor	$	70,631	$	51,648
Material and Substrate		19,541		12,717
Non-segment related*		26,741		37,733
	$	116,913	$	102,098

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