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Business Segments
 12 Months Ended
Sep. 30, 2018
Segment Reporting [Abstract]  
Business Segments
Business Segments

Our three reportable segments are as follows:

Solar - We supply thermal processing systems, including diffusion, plasma-enhanced chemical vapor deposition (“PECVD”), atomic layer deposition (“ALD”), and related automation, parts and services, to the solar/photovoltaic industry.

Semiconductor - We supply thermal processing equipment, including solder reflow equipment and related controls and diffusion for use by leading semiconductor manufacturers, and in electronics assembly for automotive and other industries.

Polishing - We produce consumables and machinery for lapping (fine abrading) and polishing of materials, such as silicon wafers for semiconductor products, sapphire substrates for LED lighting and mobile devices, compound substrates, like silicon carbide wafers, for LED and power device applications, various glass and silica components for 3D image transmission, quartz and ceramic components for telecommunications devices, medical device components and optical and photonics applications.

Information concerning our business segments is as follows (in thousands):
 
Years Ended September 30,
 
2018
 
2017
 
2016
Net revenue:
 
 
 
 
 
Solar*
$
82,502

 
$
87,031

 
$
60,946

Semiconductor
80,163

 
67,237

 
50,637

Polishing
13,761

 
10,248

 
8,725

 
$
176,426

 
$
164,516

 
$
120,308

Operating income (loss):
 
 
 
 
 
Solar*
$
(7,050
)
 
$
6,060

 
$
(6,696
)
Semiconductor
11,848

 
9,538

 
3,904

Polishing
3,672

 
2,617

 
1,588

Non-segment related
(6,551
)
 
(7,790
)
 
(6,704
)
 
$
1,919

 
$
10,425

 
$
(7,908
)
* The financial statement of business units included in the Solar segment include some sales of equipment and parts to the semiconductor, silicon wafer and MEMS industries, comprising less than 25% of the Solar segment revenue.
 
Years Ended September 30,
 
2018
 
2017
 
2016
Capital expenditures:
 
 
 
 
 
Solar
$
540

 
$
1,008

 
$
235

Semiconductor
352

 
236

 
692

Polishing
603

 
12

 
51

 
$
1,495

 
$
1,256

 
$
978

Depreciation and amortization expense:
 
 
 
 
 
Solar
$
1,003

 
$
1,544

 
$
2,014

Semiconductor
715

 
876

 
870

Polishing
136

 
73

 
90

 
$
1,854

 
$
2,493

 
$
2,974

 
September 30,
2018
 
September 30,
2017
Identifiable assets:
 
 
 
Solar
$
48,898

 
$
97,999

Semiconductor
59,744

 
57,177

Polishing
6,545

 
5,078

Non-segment related
34,219

 
31,369

 
$
149,406

 
$
191,623

Geographic Regions

We have operations in the Netherlands, United States, France and China. Revenues, operating income (loss) and identifiable assets by geographic region are as follows (in thousands):
 
Years Ended September 30,
 
2018
 
2017
 
2016
Net revenue:
 
The Netherlands
$
76,373

 
$
81,443

 
$
52,189

United States
72,753

 
60,952

 
44,299

France
6,129

 
5,588

 
8,758

China
17,634

 
12,673

 
11,799

Other
3,537

 
3,860

 
3,263

 
$
176,426

 
$
164,516

 
$
120,308

Operating income (loss):
 
 
 
 
 
The Netherlands
$
(5,269
)
 
$
5,206

 
$
(7,773
)
United States
3,871

 
1,527

 
(1,396
)
France
(3,058
)
 
(1,000
)
 
(783
)
China
5,445

 
3,647

 
1,530

Other
930

 
1,045

 
514

 
$
1,919

 
$
10,425

 
$
(7,908
)
 
 
 
 
 
 
 
 
 
As of September 30,
 
 
 
2018
 
2017
Net property, plant and equipment:
 
 
 
 
 
The Netherlands
 
 
$
5,943

 
$
5,190

United States
 
 
10,039

 
9,924

France
 
 
177

 
289

China
 
 
293

 
389

 
 
 
$
16,452

 
$
15,792