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Business Segments
 12 Months Ended
Sep. 30, 2017
Segment Reporting [Abstract]  
Business Segments
Business Segments

Following our acquisition of BTU, an evaluation was conducted of our organizational structure. Beginning with the second quarter of fiscal 2015, we made changes to our reportable segments. Prior period amounts have been revised to conform to the current period segment reporting structure. Our three reportable segments are as follows:
Solar - We are a leading supplier of thermal processing systems, including related automation, parts and services, to the solar/photovoltaic industry and also offer PECVD (plasma-enhanced chemical vapor deposition) equipment to the global solar market.

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.

Polishing - 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.

Beginning in the second quarter of 2015, SoLayTec’s business is included in the results for the Solar segment, and BTU’s business is included in the results for the Semiconductor segment. See Note 12 “Acquisitions” for additional information with respect to our recent acquisitions.

Information concerning our business segments is as follows:
 
Years Ended September 30,
 
2017
 
2016
 
2015
 
(dollars in thousands)
Net revenue:
 
 
 
 
 
Solar*
$
87,031

 
$
60,946

 
$
56,689

Semiconductor
67,237

 
50,637

 
37,250

Polishing
10,248

 
8,725

 
10,944

 
$
164,516

 
$
120,308

 
$
104,883

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

 
$
(6,696
)
 
$
(5,056
)
Semiconductor
9,538

 
3,904

 
(1,268
)
Polishing
2,617

 
1,588

 
2,250

Non-segment related
(7,790
)
 
(6,704
)
 
(9,447
)
 
$
10,425

 
$
(7,908
)
 
$
(13,521
)
* 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,
 
2017
 
2016
 
2015
 
(dollars in thousands)
Capital expenditures:
 
 
 
 
 
Solar
$
1,008

 
$
235

 
$
411

Semiconductor
236

 
692

 
136

Polishing
12

 
51

 
63

 
$
1,256

 
$
978

 
$
610

Depreciation and amortization expense:
 
 
 
 
 
Solar
$
1,544

 
$
2,014

 
$
2,940

Semiconductor
876

 
870

 
318

Polishing
73

 
90

 
99

 
$
2,493

 
$
2,974

 
$
3,357

 
September 30,
2017
 
September 30,
2016
 
(dollars in thousands)
Identifiable assets:
 
 
 
Solar
$
97,999

 
$
42,962

Semiconductor
57,177

 
51,985

Polishing
5,078

 
4,819

Non-segment related
31,369

 
18,664

 
$
191,623

 
$
118,430

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:
 
Years Ended September 30,
 
2017
 
2016
 
2015
 
(dollars in thousands)
Net revenue:
 
The Netherlands
$
81,443

 
$
52,189

 
$
46,982

United States
60,952

 
44,299

 
37,483

France
5,588

 
8,758

 
8,387

China
12,673

 
11,799

 
9,725

Other
3,860

 
3,263

 
2,306

 
$
164,516

 
$
120,308

 
$
104,883

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

 
$
(7,773
)
 
$
(9,069
)
United States
1,527

 
(1,396
)
 
(5,541
)
France
(1,000
)
 
(783
)
 
(330
)
China
3,647

 
1,530

 
986

Other
1,045

 
514

 
433

 
$
10,425

 
$
(7,908
)
 
$
(13,521
)
 
 
 
 
 
 
 
 
 
As of September 30,
 
 
 
2017
 
2016
Net property, plant and equipment:
 
 
 
 
 
The Netherlands
 
 
$
5,190

 
$
4,996

United States
 
 
9,924

 
10,171

France
 
 
289

 
241

China
 
 
389

 
552

 
 
 
$
15,792

 
$
15,960