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Stock Plans (Tables)
 12 Months Ended
Dec. 31, 2018
Stock Plans  
Share-Based Compensation Activity

A summary of the status of the Company’s restricted stock units as of December 31, 2018 and changes during the year ended December 31, 2018, is presented below:

 

 

 

 

 

 

 

 

 

 

Weighted

 

 

 

 

Average

 

 

 

 

Grant-Date

Restricted Stock Units

    

Shares

    

Fair Value

Nonvested shares at January 1, 2018

 

413,764

 

$

54.57

Granted

 

160,025

 

 

71.74

Vested

 

(189,865)

 

 

54.35

Canceled

 

(20,802)

 

 

58.44

Nonvested shares at December 31, 2018

 

363,122

 

 

60.24