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Business Segment, Geographic and Major Customer Information (Tables)
12 Months Ended
Dec. 31, 2016
Segment Reporting [Abstract]  
Financial information regarding reportable segments
Summarized financial information of the reportable segments is as follows (in thousands):
As of and for the year ended December 31,
 
Energy Chemistry Technologies
 
Consumer and Industrial Chemistry Technologies
 
Corporate and
Other
 
Total
 
 
 
 
 
 
 
 
 
2016
 
 
 
 
 
 
 
 
Net revenue from external customers
 
$
188,233

 
$
74,599

 
$

 
$
262,832

Gross margin
 
74,592

 
16,086

 

 
90,678

Income (loss) from operations
 
29,014

 
9,664

 
(45,982
)
 
(7,304
)
Depreciation and amortization
 
5,935

 
2,257

 
2,237

 
10,429

Capital expenditures
 
10,674

 
888

 
2,398

 
13,960

 
 
 
 
 
 
 
 
 
2015
 
 
 
 
 
 
 
 
Net revenue from external customers
 
$
213,592

 
$
56,374

 
$

 
$
269,966

Gross margin
 
81,935

 
14,371

 

 
96,306

Income (loss) from operations
 
43,902

 
8,742

 
(40,366
)
 
12,278

Depreciation and amortization
 
4,791

 
2,202

 
1,742

 
8,735

Capital expenditures
 
12,803

 
568

 
3,020

 
16,391

 
 
 
 
 
 
 
 
 
2014
 
 
 
 
 
 
 
 
Net revenue from external customers
 
$
268,761

 
$
51,091

 
$

 
$
319,852

Gross margin
 
117,867

 
12,897

 

 
130,764

Income (loss) from operations
 
84,846

 
6,558

 
(32,785
)
 
58,619

Depreciation and amortization
 
4,401

 
2,138

 
1,174

 
7,713

Capital expenditures
 
6,983

 
115

 
2,241

 
9,339


Assets of the Company by reportable segments are as follows (in thousands):
 
December 31, 2016
 
December 31, 2015
Energy Chemistry Technologies
$
184,328

 
$
153,447

Consumer and Industrial Chemistry Technologies
98,105

 
93,038

Corporate and Other
60,255

 
40,633

Total segments
342,688

 
287,118

Held for sale
43,900

 
115,972

Total Assets
$
386,588

 
$
403,090

Revenue by geographic location
Revenue by country is based on the location where services are provided and products are used. No individual country other than the United States (“U.S.”) accounted for more than 10% of revenue. Revenue by geographic location is as follows (in thousands):
 
Year ended December 31,
 
2016
 
2015
 
2014
U.S.
$
210,890

 
$
227,117

 
$
262,430

Other countries
51,942

 
42,849

 
57,422

Total
$
262,832

 
$
269,966

 
$
319,852

Revenue by major customers
Revenue from major customers, as a percentage of consolidated revenue, is as follows:
 
Year ended December 31,
 
2016
 
2015
 
2014
Customer A
15.7%
 
17.2%
 
9.9%
Customer B
13.2%
 
14.6%
 
22.1%
Customer C
6.9%
 
10.6%
 
2.1%