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Intangible Assets, net and Intangible Liability, net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Intangible Assets, net      
Cost $ 24,050 $ 24,050  
Accumulated amortization (1,204) (890)  
Total 22,846 23,160  
Intangible Liability, net      
Cost 4,179 4,179  
Accumulated amortization (554) (497)  
Total 3,625 3,682  
Amortization of Intangible Assets 314 199 $ 89
Amortization of Intangible Liabilities 57 57 $ 56
Intangible Assets      
2017 296    
2018 296    
2019 296    
2020 296    
2021 296    
Thereafter 21,366    
Total 22,846 23,160  
Intangible Liabilities      
2017 57    
2018 57    
2019 57    
2020 57    
2021 57    
Thereafter 3,340    
Total $ 3,625 $ 3,682