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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2016
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,
2016
 
2015
 
2016
 
2015
 
(In thousands)
Cost of revenues
$
1,747

 
$
1,741

 
$
3,588

 
$
3,480

Sales and marketing
1,457

 
1,818

 
3,090

 
3,117

Research and development
1,587

 
1,691

 
3,290

 
3,412

General and administrative
6,341

 
6,751

 
12,923

 
12,120

Total stock-based compensation expense
$
11,132

 
$
12,001

 
$
22,891

 
$
22,129
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,
 
2016
 
2015
 
2016
 
2015
 
(In thousands)
RSUs
$
8,625

 
$
9,210

 
$
17,758

 
$
17,504

Performance-based RSUs
2,285

 
2,385

 
4,662

 
3,838

ESPP
822

 
1,113

 
1,670

 
2,194

Capitalization (Included in Property and equipment, net)
(600
)
 
(707
)
 
(1,199
)
 
(1,407
)
Total stock-based compensation expense
$
11,132

 
$
12,001

 
$
22,891

 
$
22,129