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Earnings Per Share
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Earnings Per Share

6. EARNINGS PER SHARE

The components of basic and diluted earnings per share for the quarter and nine months ended September 30, 2016 and 2015 are as follows:

 

     Quarter Ended
September 30,		      Nine Months Ended
September 30,		  
     2016      2015      2016      2015  
     (Thousands of dollars)  

Weighted average outstanding shares of common stock, basic

      15,683         15,587         15,655         15,558   

Dilutive effect of unvested restricted stock units

      —           65         —           82   
  

 

 

     

 

 

     

 

 

     

 

 

  

Weighted average outstanding shares of common stock, diluted (1)

      15,683         15,652         15,655         15,640   
  

 

 

     

 

 

     

 

 

     

 

 

  

 

(1) For the three months ended September 30, 2016, 52,126 unvested restricted stock units were excluded from the weighted average outstanding shares of common stock, diluted, as they were anti-dilutive to earnings per share. For the nine months ended September 30, 2016, 22,221 unvested restricted stock units were excluded from the weighted average outstanding shares of common stock, diluted, as they were anti-dilutive to earnings per share.