v3.3.1.900
Share-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Status of Nonvested Shares

A summary of the status of nonvested shares for the years ended December 31, 2015, 2014 and 2013, is presented below:

 

     Shares      Weighted
Average

Grant-Date
Fair Value
 

Nonvested at January 1, 2013

     753,079         22.35   

Granted

     377,379         22.77   

Vested

     (299,110      18.79   

Canceled

     (132,117      24.47   
  

 

 

    

 

 

 

Nonvested at December 31, 2013

     699,231         23.70   

Granted

     992,919         14.48   

Vested

     (400,429      20.18   

Canceled

     (169,311      25.57   
  

 

 

    

 

 

 

Nonvested at December 31, 2014

     1,122,410       $ 16.52   

Granted

     1,278,329         4.87   

Vested

     (419,222      15.26   

Canceled

     (246,261      14.30   
  

 

 

    

 

 

 

Nonvested at December 31, 2015

     1,735,256       $ 8.60