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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2015
Share-based Compensation [Abstract]  
Classification Of Stock-Based Compensation
The following table presents the classification of stock-based compensation:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
2015
 
2014
 
2015
 
2014
 
(In thousands)
Cost of revenues
$
1,741

 
$
1,532

 
$
3,480

 
$
3,130

Sales and marketing
1,818

 
1,820

 
3,117

 
3,668

Research and development
1,691

 
1,639

 
3,412

 
3,511

General and administrative
6,751

 
4,381

 
12,120

 
9,056

Total stock-based compensation expense
$
12,001

 
$
9,372

 
$
22,129

 
$
19,365
Nature Of Total Stock-Based Compensation
The following table presents the nature of the Company’s total stock-based compensation:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
 
(In thousands)
RSUs
$
9,210

 
$
7,066

 
$
17,504

 
$
14,781

Performance-based RSUs
2,385

 
2,030

 
3,838

 
3,898

Employee stock purchase plan
1,113

 
1,038

 
2,194

 
2,078

Capitalization (Included in Property and equipment, net)
(707
)
 
(762
)
 
(1,407
)
 
(1,392
)
Total stock-based compensation expense
$
12,001

 
$
9,372

 
$
22,129

 
$
19,365