XML 36 R25.htm IDEA: XBRL DOCUMENT v3.7.0.1
STOCK-BASED COMPENSATION (Tables)
 6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-based Compensation Expense
The following table summarizes the stock-based compensation expense for the three and six months ended June 30, 2017, and June 30, 2016:
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
(In thousands)
2017

2016
 
2017
 
2016
Cost of revenues
$
351

 
$
293

 
$
494

 
$
383

Research and development
2,351

 
1,940

 
3,985

 
3,409

Sales and marketing
1,189

 
899

 
2,286

 
1,926

General and administrative
2,436

 
1,880

 
4,531

 
3,710

Total stock-based compensation expense
$
6,327

 
$
5,012

 
$
11,296

 
$
9,428
Summary of Option Activity Under the Plans
A summary of stock options outstanding as of June 30, 2017, and activity during the six months then ended, is presented below:
 
Shares
(in thousands)
 
Weighted-
Average
Exercise
Price
 
Weighted-Average
Remaining
Contractual Term
(in years)
 
Aggregate
Intrinsic Value
(in thousands)
Outstanding at January 1, 2017
697

 
$
28.62

 
 
 
 
Granted
—

 
—

 
 
 
 
Exercised
(84
)
 
$
31.52

 
 
 
 
Forfeited or expired
—

 
—

 
 
 
 
Outstanding at June 30, 2017
613

 
$
28.22

 
2.34
 
$
27,417

Vested and exercisable at June 30, 2017
613

 
 
 
2.34
 
$
27,417
Performance Based Awards (PSUs)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
A summary of PSUs outstanding as of June 30, 2017, and activity during the six months then ended, is presented below:
 
Shares
(in thousands)
 
Weighted-Average
Grant Date Fair
Value Per Share
 
Weighted-Average
Remaining
Contractual Term
(in years)
 
Aggregate
Intrinsic Value
(in thousands)
Outstanding at January 1, 2017
99

 
$
46.25

 
 
 
 
Granted
88

 
$
63.99

 
 
 
 
Vested
(99
)
 
$
46.25

 
 
 
 
Forfeited
—

 
—

 
 
 
 
Outstanding at June 30, 2017
88

 
$
63.99

 
0.50
 
$
6,382

Outstanding and expected to vest at June 30, 2017
80

 
 
 
0.50
 
$
5,807
Long-Term Performance-Based Awards (PRSUs)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
A summary of PRSUs outstanding as of June 30, 2017, and activity during the six months then ended, is presented below:
 
Shares
(in thousands)
 
Weighted-Average
Grant Date Fair
Value Per Share
 
Weighted-Average
Remaining
Contractual Term
(in years)
 
Aggregate
Intrinsic Value
(in thousands)
Outstanding at January 1, 2017
150

 
$
47.65

 
 
 
 
Granted
71

 
$
63.00

 
 
 
 
Vested
—

 
—

 
 
 
 
Forfeited
(7
)
 
$
47.89

 
 
 
 
Outstanding at June 30, 2017
214

 
$
52.75

 
1.50
 
$
15,615

Outstanding and expected to vest at June 30, 2017
186

 
 
 
1.69
 
$
13,543
Restricted Stock Units (RSUs)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
A summary of RSUs outstanding as of June 30, 2017, and activity during the six months then ended, is presented below:
 
Shares
(in thousands)
 
Weighted- Average
Grant Date Fair
Value Per Share
 
Weighted-Average
Remaining
Contractual Term
(in years)
 
Aggregate
Intrinsic Value
(in thousands)
Outstanding at January 1, 2017
718

 
$
47.54

 
 
 
 
Granted
541

 
$
60.46

 
 
 
 
Vested
(266
)
 
$
46.16

 
 
 
 
Forfeited
(29
)
 
$
49.02

 
 
 
 
Outstanding at June 30, 2017
964

 
$
55.12

 
2.44
 
$
70,284

Outstanding and expected to vest at June 30, 2017
854

 
 
 
2.26
 
$
62,277