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Operating Segments, Geographic Information and Significant Customers
 12 Months Ended
Dec. 31, 2017
Segment Reporting [Abstract]  
Operating Segments, Geographic Information And Significant Customers
Operating Segments, Geographic Information and Significant Customers

Operating Segments

The following table presents summary results of our operating segments for the year ended December 31, 2015, 2016 and 2017 (in thousands):

 
Year Ended December 31,
 
2015
 
2016
 
2017
Revenue
 
 
 
 
 
Medicare
$
98,038

 
$
122,156

 
$
142,448

Individual, Family and Small Business
105,309

 
71,168

 
48,258

Total revenue
$
203,347

 
$
193,324

 
$
190,706

 
 
 
 
 
 
Segment profit
 
 
 
 
 
Medicare segment profit
$
13,598

 
$
10,394

 
$
22,137

Individual, Family and Small Business segment profit
38,654

 
33,050

 
9,573

Total segment profit
52,252

 
43,444

 
31,710

Corporate
(25,135
)
 
(29,073
)
 
(26,970
)
Stock-based compensation expense
(6,889
)
 
(7,266
)
 
(9,694
)
Depreciation and amortization
(4,148
)
 
(3,539
)
 
(2,837
)
Restructuring (charge) benefit
(4,541
)
 
297

 
—

Acquisition costs
—

 
—

 
(621
)
Amortization of intangible assets
(1,153
)
 
(1,040
)
 
(1,040
)
Other income, net
1,285

 
1,149

 
1,182

Income (loss) before provision (benefit) for income taxes
$
11,671

 
$
3,972

 
$
(8,270
)


There are no internal revenue transactions between our operating segments. Our CODM does not separately evaluate assets by segment, and therefore assets by segment are not presented.

Geographic Information

Our long-lived assets consisted primarily of property and equipment, internally-developed software, goodwill and other indefinite-lived intangible assets and finite-lived intangible assets. Our long-lived assets are attributed to the geographic location in which they are located. Long-lived assets by geographical area as of December 31, 2016 and December 31, 2017 were as follows (in thousands):  
 
December 31, 2016
 
December 31, 2017
United States
$
32,162

 
$
32,876

China
391

 
550

Total
$
32,553

 
$
33,426


 
Significant Customers

Substantially all revenue for the years ended December 31, 2015, 2016 and 2017 was generated from customers located in the United States. Carriers representing 10% or more of our total revenue for the years ended December 31, 2015, 2016 and 2017 are presented in the table below: 

 
Year Ended December 31,
 
2015
 
2016
 
2017
Humana
23
%
 
22
%
 
20
%
UnitedHealthcare 1
12
%
 
19
%
 
23
%
Aetna 2
11
%
 
11
%
 
10
%


(1)
UnitedHealthcare also includes other carriers owned by UnitedHealthcare. 
(2)
Aetna includes other carriers owned by Aetna.