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Vessels, net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]      
Annual growth rate of time charter rates 1.70%    
Expected rate of inflation 1.00%    
Expected fleet utilisation rate 90.00%    
Impairment loss $ 0 $ 0 $ 0
Time Period Considered The Company used the historical ten-year blended average one-year time charter rates.    
Supramax      
Disclosure of detailed information about property, plant and equipment [line items]      
Vessel capacity 50,000    
Panamax      
Disclosure of detailed information about property, plant and equipment [line items]      
Vessel capacity 70,000