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STOCK-BASED COMPENSATION (Tables)
9 Months Ended
Sep. 30, 2011
STOCK-BASED COMPENSATION 
Assumptions used in the option pricing model to assess the fair values of the options granted
 
  Options  

Risk free interest rate

  0.29-1.89%  

Expected option life (years)

  1.0-4.0  

Expected dividend yield

  2.80-2.87%  

Volatility factor

  40.26-94.3%  

Weighted-average grant date fair value (per share)

  $9.45  
Summary of common stock options and equity-based incentive awards activity
 
  Common Stock Options   Equity-based
incentive awards
 
 
  Quantity   Weighted
Average
Exercise
Price
  Quantity   Weighted
Average
Exercise
Price
 

Outstanding as of December 31, 2010

    7,426,499   $ 16.78     3,192,483   $ 14.00  
                   

Granted

    933,125     18.88     512,500     14.00  

Exercised

    (364,326 )   14.69     (213,406 )   14.00  

Forfeited

    (159,271 )   16.14     (69,688 )   14.00  

Expired

    (76,875 )   22.42     (3,750 )   14.00  
                   

Outstanding as of September 30, 2011

    7,759,152     17.09     3,418,139     14.00  
                   
Summary of information about nonvested common stock options and equity-based incentive awards

 

 
  Common Stock Options   Equity-based
incentive awards
 
 
  Quantity   Weighted
average
grant-date
fair value
  Quantity   Weighted
average
grant-date
fair value
 

Nonvested as of December 31, 2010

    4,204,468   $ 10.97     2,276,667   $ 2.80  

Granted

    933,125     12.30     512,500     2.80  

Vested

    (1,521,169 )   11.44     (738,329 )   2.80  

Forfeited

    (159,271 )   9.74     (69,688 )   2.80  
                   

Nonvested as of September 30, 2011

    3,457,153     11.32     1,981,150     2.80