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Revenue and Other Information (Tables)
 9 Months Ended
Sep. 30, 2017
Segment Reporting [Abstract]  
Schedule of Product Information by Revenue Categories
The following table presents our revenue categories for the three and nine months ended September 30, 2017 and 2016 (in thousands): 
 
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
 
2017
 
2016
 
2017
 
2016
Core solutions
 
$
14,670

 
$
11,302

 
$
41,682

 
$
31,637

Value+ services
 
21,752

 
15,684

 
60,053

 
42,338

Other
 
1,481

 
1,176

 
4,171

 
3,601

Total revenues
 
$
37,903

 
$
28,162

 
$
105,906

 
$
77,576