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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]  
Interest Cost Capitalized and Incurred

approximated 1.9% in 2014, 1.9% in 2013, and 2.2% in 2012. Interest cost capitalized and incurred in the years ended December 31, 2014, 2013, and 2012 are as follows:

 

     Year Ended December 31,  
     2014      2013      2012  

Interest incurred

    $ 2,180       $ 2,626       $ 1,064   

Interest capitalized

      379         382         365   
  

 

 

     

 

 

     

 

 

  

Interest expense

    $ 1,801       $ 2,244       $ 699