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Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2016
Share-based Compensation [Abstract]  
Classification Of Stock-Based Compensation
The following table presents the classification of stock-based compensation:
 
Three Months Ended March 31,
2016
 
2015
 
(In thousands)
Cost of revenues
$
1,841

 
$
1,739

Sales and marketing
1,633

 
1,299

Research and development
1,703

 
1,721

General and administrative
6,582

 
5,369

Total stock-based compensation expense
$
11,759

 
$
10,128
Nature Of Total Stock-Based Compensation
The following table presents the nature of the Company’s total stock-based compensation:
 
Three Months Ended March 31,
 
2016
 
2015
 
(In thousands)
RSUs
$
9,133

 
$
8,294

Performance-based RSUs
2,377

 
1,453

ESPP
848

 
1,081

Capitalization (Included in Property and equipment, net)
(599
)
 
(700
)
Total stock-based compensation expense
$
11,759

 
$
10,128