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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2011
Share-Based Compensation  
Compensation Expense Included In Salaries And Employee Benefits Expense And Related Income Tax Benefits
(dollars in thousands)    For the Three Months
Ended June 30,
     For the Six Months
Ended June 30,
 
     2011      2010      2011      2010  

Compensation expense related to stock options

   $ 212       $ 325       $ 572       $ 581   

Income tax benefit related to stock options

     74         114         200         203   

Impact on basic earnings per share

     0.01         0.01         0.01         0.02   

Impact on diluted earnings per share

     0.01         0.01         0.01         0.02   
Estimate Fair Value Of Share-Based Awards With Weighted-Average Assumptions
     For the Three Months Ended
June 30,
   

For the Six Months Ended

June 30,

 
     2011     2010     2011     2010  

Expected dividends

     2.2     2.3     2.2     2.2

Expected volatility

     31.7     33.8     31.6     26.1

Risk-free interest rate

     3.6     3.5     3.6     4.1

Expected term (in years)

     6.4        5.8        6.1        6.4   

Weighted-average grant-date fair value

   $ 16.41      $ 16.76      $ 16.44      $ 16.12   
Activity Related To Stock Options
     Number of shares     Weighted
average
exercise price
     Weighted average
remaining contract life
 

Outstanding options, December 31, 2010

     1,301,539      $ 45.52      

Granted

     94,196        63.09      

Exercised

     (188,192     32.44      

Forfeited or expired

     (21,867     57.29      
  

 

 

   

 

 

    

 

 

 

Outstanding options, June 30, 2011

     1,185,676      $ 48.78         4.5 Years   

Outstanding exercisable at June 30, 2011

     856,944      $ 45.83         3.2 Years   

Outstanding options, December 31, 2009

     1,259,874      $ 43.05      

Granted

     118,366        59.80      

Exercised

     (51,048     22.16      

Forfeited or expired

     (716     57.87      
  

 

 

   

 

 

    

 

 

 

Outstanding options, June 30, 2010

     1,326,476      $ 45.34         5.0 Years   

Outstanding exercisable at June 30, 2010

     937,661      $ 40.62         3.7 Years   
Compensation Expense Related To Restricted Stock Grants
(dollars in thousands)    For the Three Months
Ended June 30,
     For the Six Months
Ended June 30,
 
     2011      2010      2011      2010  

Compensation expense related to restricted stock

   $ 1,685       $ 1,568       $ 3,363       $ 2,962   
Unvested Restricted Stock Award Activity
     For the Six Months  Ended
June 30,
 
     2011     2010  

Balance, beginning of period

     539,195        550,518   

Granted

     120,675        114,467   

Forfeited

     (27,561     (3,133

Earned and issued

     (101,891     (92,104
  

 

 

   

 

 

 

Balance, end of period

     530,418        569,748   
Schedule Of Share And Dividend Equivalent Share Award Activity