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Business Segment, Geographic and Quarterly Financial Data
 12 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
Business Segment, Geographic and Quarterly Financial Data
BUSINESS SEGMENT, GEOGRAPHIC AND QUARTERLY FINANCIAL DATA
Business Segment Financial Data
We segregate our financial results into two reportable segments representing two broad technology segments as follows:
•
The Air Pollution Control technology segment includes technologies to reduce NOx emissions in flue gas from boilers, incinerators, furnaces and other stationary combustion sources. These include Low and Ultra Low NOx Burners (LNB and ULNB), Over-Fire Air (OFA) systems, NOxOUT® and HERT™ Selective Non-Catalytic Reduction (SNCR) systems, and Advanced Selective Catalytic Reduction (ASCR™) systems. Our ASCR systems include ULNB, OFA, and SNCR components, along with a downsized SCR catalyst, Ammonia Injection Grid (AIG), and Graduated Straightening Grid GSG™ systems to provide high NOx reductions at significantly lower capital and operating costs than conventional SCR systems. The NOxOUT CASCADE® and NOxOUT-SCR® processes are more basic, using just SNCR and SCR catalyst components. ULTRA® technology creates ammonia at a plant site using safe urea for use with any SCR application. Flue Gas Conditioning systems are chemical injection systems offered in markets outside the U.S. and Canada to enhance electrostatic precipitator and fabric filter performance in controlling particulate emissions.
•
The FUEL CHEM® technology segment, which uses chemical processes in combination with advanced CFD and CKM boiler modeling, for the control of slagging, fouling, corrosion, opacity and other sulfur trioxide-related issues in furnaces and boilers through the addition of chemicals into the furnace using TIFI® Targeted In-Furnace Injection™ technology.
The “Other” classification includes those profit and loss items not allocated to either reportable segment. There are no inter-segment sales that require elimination.
We evaluate performance and allocate resources based on gross margin by reportable segment. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies. We do not review assets by reportable segment, but rather, in aggregate for the Company as a whole.
Information about reporting segment net sales and gross margin from continuing operations are provided below:
For the year ended December 31, 2018
 
Air Pollution 
Control Segment
 
FUEL CHEM
Segment
 
Other
 
Total
Revenues from external customers
 
$
38,417


$
18,118


$
—


$
56,535

Cost of sales
 
(27,382
)

(9,089
)

—


(36,471
)
Gross margin
 
11,035


9,029


—


20,064

Selling, general and administrative
 
—


—


(18,564
)

(18,564
)
Research and development
 
—


—


(1,073
)

(1,073
)
Intangible assets impairment
 
—


—


(317
)

(317
)
Operating income (loss) from continuing operations
 
$
11,035


$
9,029


$
(19,954
)

$
110

 
For the year ended December 31, 2017
 
Air Pollution 
Control Segment
 
FUEL CHEM
Segment
 
Other
 
Total
Revenues from external customers
 
$
27,808

 
$
17,358

 
$
—

 
$
45,166

Cost of sales
 
(18,478
)
 
(8,666
)
 
—

 
(27,144
)
Gross margin
 
9,330

 
8,692

 
—

 
18,022

Selling, general and administrative
 
—

 
—

 
(20,933
)
 
(20,933
)
Restructuring charge
 
(58
)
 
(61
)
 
—

 
(119
)
Research and development
 
—

 
—

 
(1,070
)
 
(1,070
)
Building impairment
 
—

 
—

 
(2,965
)
 
(2,965
)
Operating income (loss) from continuing operations
 
$
9,272

 
$
8,631

 
$
(24,968
)
 
$
(7,065
)
 
For the year ended December 31, 2016
 
Air Pollution 
Control Segment
 
FUEL CHEM
Segment
 
Other
 
Total
Revenues from external customers
 
$
34,052

 
$
21,109

 
$
—

 
$
55,161

Cost of sales
 
(25,370
)
 
(10,997
)
 
—

 
(36,367
)
Gross margin
 
8,682

 
10,112

 
—

 
18,794

Selling, general and administrative
 
—

 
—

 
(25,564
)
 
(25,564
)
Restructuring charge
 
(537
)
 
(891
)
 
—

 
(1,428
)
Research and development
 
—

 
—

 
(1,752
)
 
(1,752
)
Intangible assets impairment
 
—

 
—

 
(2,074
)
 
(2,074
)
Operating income (loss) from continuing operations
 
$
8,145

 
$
9,221

 
$
(29,390
)
 
$
(12,024
)
 
Geographic Segment Financial Data
Information concerning our operations by geographic area is provided below. Revenues are attributed to countries based on the location of the customer. Assets are those directly associated with operations of the geographic area.
 
For the years ended December 31,
 
2018
 
2017
 
2016
Revenues:
 
 
 
 
 
 
United States
 
$
43,887

 
$
29,510

 
$
42,545

Foreign
 
12,648

 
15,656

 
12,616

 
 
$
56,535

 
$
45,166

 
$
55,161


As of December 31,
 
2018
 
2017
Assets:
 
 
 
 
United States
 
$
36,784

 
$
29,945

Foreign
 
14,935

 
20,539

 
 
$
51,719

 
$
50,484