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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2016
Stock-Based Compensation [Abstract]  
Restricted Stock Activity
Restricted stock activity for the nine months ended September 30, 2016 was as follows (shares in thousands):
 
 
 
Shares
  
Weighted-Average
Grant Date Fair Value
 
Restricted stock awards outstanding at December 31, 2015
  
1,370
  
$
17.82
 
Awards granted
  
358
   
19.95
 
Awards vested
  
(329
)
  
17.00
 
Awards forfeited
  
(123
)
  
17.54
 
Restricted stock awards outstanding at September 30, 2016
  
1,276
  
$
18.62