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Significant Accounting Policies and Recent Accounting Pronouncements (Details)
12 Months Ended
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Provision for doubtful accounts $ 0 $ 0
Vessels dry-dock or special survey period within the first 15 years of useful life 5 years  
Vessels dry-dock or special survey period within the remaining useful life 2 years 6 months  
Scrap value per light weight ton $ 685  
Vessels useful life 35 years  
Number of Reportable Segments 1