XML 19 R25.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2012
Share-based Compensation [Abstract]  
Summary of the status of the company's stock option plan
A summary of the Company’s stock option activity at December 31, 2012 and changes during the period are presented in the table below (share numbers and aggregate intrinsic values in thousands):
 
Number of
Options
Outstanding
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Contractual
Term (Years)
 
Aggregate
Intrinsic
Value
Balances, December 31, 2011
2,768

 
$
15.71

 
 
 
 
Granted
139

 
28.72

 
 
 
 

Exercised
(771
)
 
13.24

 
 
 
 

Forfeited, canceled or expired
(102
)
 
24.72

 
 
 
 
Balances, December 31, 2012
2,034

 
$
17.09

 
5.5
 
$
28,854

Options vested and expected to vest at December 31, 2012
2,001

 
$
16.85

 
5.4
 
$
28,718

Options vested at December 31, 2012
1,677

 
$
14.63

 
4.8
 
$
26,705
Assumption used to value options granted during the period
The assumptions used to value options granted during the twelve months ended December 31, 2012, 2011, and 2010, were as follows:

 
Year Ended December 31,
 
2012
 
2011
 
2010
Dividend yield
—

 
—

 
—

Annual risk free rate of return
0.8
%
 
1.5
%
 
1.9
%
Expected volatility
56.5
%
 
53.3
%
 
51.1
%
Expected term (years)
4.3

 
4.3

 
4.5
Summary of company restricted stock unit activity
A summary of the Company’s restricted stock unit activity for the twelve months ended December 31, 2012, is as follows (share numbers in thousands):
 
Number of
Units
Outstanding
 
Weighted
Average
Grant Date
Fair Value
Awarded and unvested, December 31, 2011
1,969

 
$
31.33

Granted
2,566

 
28.55

Vested
(885
)
 
23.18

Forfeited
(398
)
 
33.40

Awarded and unvested, December 31, 2012
3,252

 
$
31.10

Restricted stock units expected to vest, December 31, 2012
2,895

 
 
Schedule of restricted award grant activity
The chart below summarizes grant activity during the twelve months ended December 31, 2012 by equity plan (share numbers in thousands):
 
Grants in 2012
2006 Equity Incentive Plan
 
Restricted stock units (1)
1,385

Performance-based restricted stock units (2)
445

Total grants under 2006 Plan
1,830

 
 
Inducement Plans
 
Restricted stock units (3)
635

Performance-based restricted stock units (4)
101

Total grants under Inducement Plans
736

 
 
Total awards granted in 2012
2,566