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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Components of Basic and Diluted Earnings Per Share

The components of basic and diluted earnings per share for the quarter ended March 31, are as follows:

 

     2015      2014  
     (Thousands of shares)  

Weighted average outstanding shares of common stock, basic

      15,579         15,480   

Dilutive effect of restricted stock units

      83         —     
  

 

 

     

 

 

  

Weighted average outstanding shares of common stock, diluted

   15,662      15,480