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Share-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2014
Share-Based Compensation [Abstract]  
Summary of stock option activity
A summary of our stock options as of September 30, 2014 and changes during the nine months then ended is presented below:
 
 
 
Shares
(000s)
  
Weighted-Average
Exercise Price
 
Weighted-Average Remaining Contractual Term (years)
 
Aggregate Value ($000s)
 
Options
 
  
 
 
 
Outstanding at January 1, 2014
  
4,325
  
$
15.09
 
 
 
Granted
  
98
   
16.60
 
 
 
Exercised
  
(119
)
  
12.58
 
 
 
Forfeited
  
(71
)
  
12.83
 
 
 
Expired
  
(494
)
  
26.80
 
 
 
Outstanding at September 30, 2014
  
3,739
   
13.70
   
6.52
  
$
14,810
 
Exercisable at September 30, 2014
  
1,982
  
$
15.67
   
5.43
  
$
6,672
 
Summary of restricted stock, restricted stock units , and performance share units ("nonvested shares")
The following table shows a summary of our restricted stock, restricted stock units and performance share units ("nonvested shares") as of September 30, 2014, as well as activity during the nine months then ended:

 
 
Restricted Stock and
Restricted Stock Units
  
Performance Share Units
 
Nonvested Shares
 
Shares
(000s)
  
Weighted-
Average
Grant Date
Fair Value
  
Shares
(000s)
  
Weighted-
Average
Grant Date
Fair Value
 
Nonvested at January 1, 2014
  
841
  
$
10.44
   
—
  
$
—
 
Granted
  
430
   
16.85
   
333
   
14.79
 
Vested
  
(173
)
  
11.01
   
—
   
—
 
Forfeited
  
(35
)
  
11.39
   
—
   
—
 
Nonvested at September 30, 2014
  
1,063
  
$
12.91
   
333
  
$
14.79