XML 54 R40.htm IDEA: XBRL DOCUMENT v3.8.0.1
Restricted Stock, Performance Share and Cash Awards (Tables)
 12 Months Ended
Dec. 31, 2017
Text Block [Abstract]  
Schedule of Restricted Stock Awards Vesting Periods

The vesting periods of the 2017, 2016 and 2015 restricted stock unit awards are as follows (in actual shares):

 

     Restricted Stock Units Granted  

Vesting Period

    2017      2016      2015  

One year

      21,600        27,417        22,175  

Four years

      —          —          9,200  

Five years

      454,750        451,750        363,600  
  

 

 

     

 

 

     

 

 

  

Total shares granted

      476,350        479,167        394,975