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Stock-based Compensation (Tables)
6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-based compensation expense
Total compensation expense by award type and line item in our consolidated financial statements were as follows (in thousands):

 
For the Three
 
For the Six
 
Months Ended
 
Months Ended
  
June 30,
 
June 30,
  
2017
 
2016
 
2017
 
2016
Award Type
 
 
 
 
 
 
 
Stock options
$
4,108

 
$
3,921

 
$
8,161

 
$
7,740

Performance-based stock options
112

 
123

 
222

 
148

RSUs
1,140

 
665

 
2,081

 
1,157

Total
$
5,360

 
$
4,709

 
$
10,464

 
$
9,045

 
 
 
 
 
 
 
 
Line Item
 
 
 
 
 
 
 
Cost of revenue
$
391

 
$
406

 
$
742

 
$
850

Selling, general and
 
 
 
 
 
 
 
administrative expenses
4,969

 
4,303

 
9,722

 
8,195

Total
$
5,360

 
$
4,709

 
$
10,464

 
$
9,045

Stock-based awards granted
Stock-based awards granted were as follows:
 
For the Three
 
For the Six
 
Months Ended
 
Months Ended
 
June 30,
 
June 30,
 
2017
 
2016
 
2017
 
2016
Stock options
10,215

 
42,870

 
877,064

 
900,000

Performance-based stock options

 

 

 
267,770

RSUs
36,536

 
27,618

 
424,133

 
413,331