Operating Revenue by Geographic Location (Tables)
12 Months Ended
Dec. 31, 2014
Operating Revenue by Geographic Location  
Schedule of operating revenue by geographic location

        Operating revenue by geographic location for the years ended December 31, was as follows (in thousands):

                                                                                                                                                                                    

Continent

 

2014

 

2013

 

2012

 

Australia—Asia

 

$

389,098 

 

$

413,662 

 

$

403,697 

 

Europe

 

 

162,993 

 

 

174,455 

 

 

185,312 

 

​  

​  

​  

​  

​  

​  

Total Revenue

 

$

552,091 

 

$

588,117 

 

$

589,009 

 

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​