Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.7.0.1
Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2017
Share-based Compensation [Abstract]  
Schedule Of Stock-Based Compensation Expense
Stock-based compensation expense consisted of the following (in thousands):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2017
 
2016
 
2017
 
2016
Stock options
$
1,005

 
$
1,009

 
$
2,009

 
$
1,981

Restricted stock units
1,772

 
1,371

 
3,710

 
3,472

Total
$
2,777

 
$
2,380

 
$
5,719

 
$
5,453

Schedule Of Weighted Average Assumptions For Employee Stock Options
The following table presents the weighted average assumptions for stock options granted in the periods:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2017
 
2016
 
2017
 
2016
Expected option term
6.89 years
 
7.73 years
 
4.56 years
 
4.63 years
Expected stock price volatility
28.50%
 
30.95%
 
28.91%
 
29.80%
Risk-free interest rate
1.94%
 
1.47%
 
1.72%
 
1.17%
Expected annual dividend yield
1.26%
 
1.21%
 
1.30%
 
1.20%
Weighted average grant date fair value
$15.98
 
$17.47
 
$13.00
 
$13.39
Schedule Of Weighted Average Assumptions For Restricted Stock Units
The following table presents the weighted average assumptions for restricted stock units granted in the periods:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2017
 
2016
 
2017
 
2016
Vesting period
3.08 years
 
2.80 years
 
3.86 years
 
3.83 years
Expected annual dividend yield
1.26%
 
1.20%
 
1.30%
 
1.16%
Estimated average grant date fair value per restricted stock unit
$55.06
 
$54.80
 
$52.54
 
$55.94