Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v2.4.0.8
Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2013
Share-based Compensation [Abstract]  
Summary 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,
 
 
2013
 
2012
 
2013
 
2012
Stock options
 
$
883

 
$
869

 
$
1,710

 
$
1,777

Restricted stock units
 
1,449

 
1,322

 
2,572

 
2,526

Total
 
$
2,332

 
$
2,191

 
$
4,282

 
$
4,303

Schedule Of Weighted Average Assumptions
The following table presents the weighted average assumptions for stock options granted in the period:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2013
 
2012
 
2013
 
2012
Expected term
7.02 years
 
7.69 years
 
4.72 years
 
4.79 years
Expected stock price volatility
28.54%
 
29.66%
 
30.80%
 
32.20%
Risk-free interest rate
1.55%
 
1.09%
 
0.69%
 
0.89%
Expected dividend yield
1.44%
 
1.79%
 
1.63%
 
1.80%
Weighted average grant date fair value
$16.45
 
$12.85
 
$12.31
 
$11.57
Schedule Of Weighted Average Assumptions For Restricted Stock Units
The following table presents the weighted average assumptions for restricted stock units granted in the period:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2013
 
2012
 
2013
 
2012
Vesting period
3.07 years
 
2.90 years
 
3.93 years
 
3.84 years
Expected dividend yield
1.44%
 
1.78%
 
1.60%
 
1.79%
Estimated average grant date fair value per restricted stock unit
$58.67
 
$46.90
 
$51.78
 
$45.96