Business Segments

12 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Business Segments

18.  Business Segments

After announcing the planned divestiture of our Solar segment (see Note 2), we conducted an evaluation of our organizational structure. Beginning with the second quarter of fiscal 2019, we made changes to our reportable

segments. With the divesture of our Automation segment in the first quarter of fiscal 2020, we further evaluated our organizational structure and concluded that we have two reportable business segments following the divestiture. 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.

SiC/LED–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. We formerly referred to our SiC/LED segment as “Polishing.”

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

	Years Ended September 30,
	2020			2019			2018
Net revenue:
Semiconductor	$	54,516		$	66,455		$	80,163
SiC/LED		10,304			13,682			13,761
Non-segment related		643			4,898			6,129
	$	65,463		$	85,035		$	100,053
Operating income (loss):
Semiconductor	$	4,168		$	8,744		$	11,848
SiC/LED		684			3,641			3,672
Non-segment related		(5,337	)		(7,469	)		(9,448	)
	$	(485	)	$	4,916		$	6,072

	Years Ended September 30,
	2020		2019		2018
Capital expenditures:
Semiconductor	$	912	$	379	$	352
SiC/LED		1,724		171		603
Non-segment related		39		33		39
	$	2,675	$	583	$	994
Depreciation and amortization expense:
Semiconductor	$	821	$	828	$	715
SiC/LED		197		136		136
Non-segment related		60		161		202
	$	1,078	$	1,125	$	1,053

	September 30, 2020		September 30, 2019
Identifiable assets:
Semiconductor	$	51,648	$	56,855
SiC/LED		12,717		7,779
Non-segment related*		37,733		39,088
Held-for-sale assets**		—		22,755
	$	102,098	$	126,477

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

** See Note 2 for additional information on held-for-sale assets.