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Stock-Related Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2017
Summary of Activity for Restricted Stock Awards

The following table provides a summary of activity with regard to restricted stock awards in the year ended December 31, 2017:

 

     For the Year Ended December 31, 2017  
     Number of Shares      Weighted Average
Grant Date
Fair Value		  

Unvested at beginning of year

      6,930,306        15.37  

Granted

      2,956,249        15.16  

Vested

      (3,867,828 )       15.19  

Cancelled

      (444,560 )       15.55  
  

 

 

     

Unvested at end of year

      5,574,167        15.38