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Retirement Plans and Employee Stock Purchase Plans (Tables)
 12 Months Ended
Dec. 31, 2016
Retirement Plans and Employee Stock Purchase Plans  
Schedule of purchases made under the 2009 Employee Stock Purchase Plans

 

 

 

 

 

 

 

 

 

 

 

 

 

Year ended December 31,

 

 

 

2016

 

2015

 

2014

 

Number of shares purchased

    

 
151,531

    

 
254,098

    

 
295,035

 

Average price of shares purchased

 

$
20.87

 

$
13.50

 

$
12.72