Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v2.4.0.6
Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2012
Share-based Compensation [Abstract]  
Summary Of Stock-Based Compensation Expense
Stock-based compensation expense consisted of the following (in thousands):
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2012
 
2011
 
2012
 
2011
Stock options
 
$
607

 
$
906

 
$
2,384

 
$
2,633

Restricted stock units
 
797

 
1,145

 
3,323

 
3,222

Total
 
$
1,404

 
$
2,051

 
$
5,707

 
$
5,855

Schedule Of Weighted Average Assumptions
The following table presents the weighted average assumptions for stock options granted in the period:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2012
 
2011
 
2012
 
2011(1)
Expected term
4.51 years
 
4.49 years
 
4.78 years
 
5.12 years
Expected stock price volatility
31.95%
 
31.21%
 
32.20%
 
30.76%
Risk-free interest rate
0.47%
 
0.95%
 
0.88%
 
1.84%
Expected dividend yield
1.63%
 
1.53%
 
1.80%
 
1.31%
Weighted average grant date fair value
$12.37
 
$13.39
 
$11.57
 
$16.09
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 September 30,
 
Nine Months Ended September 30,
 
2012
 
2011
 
2012
 
2011
Vesting period
4.00 years
 
4.00 years
 
3.86 years
 
3.96 years
Expected dividend yield
1.63%
 
1.84%
 
1.77%
 
1.33%
Estimated average grant date fair value per restricted stock unit
$50.46
 
$44.82
 
$46.57
 
$58.37