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Stock-Based Compensation
9 Months Ended
Sep. 30, 2018
Share-based Compensation [Abstract]  
Stock-Based Compensation
Stock-based Compensation
Stock-based compensation is classified in the Condensed Consolidated Statements of Comprehensive Income in the same expense line items as cash compensation. The following table presents the classification of stock-based compensation:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
2018
 
2017
 
2018
 
2017
 
(In thousands)
Cost of revenues
$
1,755

 
$
1,774

 
$
5,183

 
$
5,311

Sales and marketing
1,451

 
1,369

 
4,393

 
4,255

Research and development
1,623

 
1,575

 
5,032

 
4,553

General and administrative
10,301

 
9,387

 
26,798

 
25,924

Total stock-based compensation expense
$
15,130

 
$
14,105

 
$
41,406

 
$
40,043



The following table presents the nature of the Company’s total stock-based compensation:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2018
 
2017
 
2018
 
2017
 
(In thousands)
RSUs
$
10,817

 
$
10,556

 
$
29,510

 
$
28,930

Performance-based RSUs
3,875

 
3,100

 
10,348

 
9,992

ESPP
1,018

 
1,000

 
3,127

 
2,941

Capitalization (included in Property and equipment, net)
(580
)
 
(551
)
 
(1,579
)
 
(1,820
)
Total stock-based compensation expense
$
15,130

 
$
14,105

 
$
41,406

 
$
40,043