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Vessels, textuals (Details) - Jun. 30, 2015 - USD ($)
$ in Thousands
Total
Property, Plant and Equipment [Line Items]  
Costs capitalised in vessels $ 218
YM Los Angeles [Member]  
Property, Plant and Equipment [Line Items]  
Contract price of vessels acquired 21,500
YM New Jersey [Member]  
Property, Plant and Equipment [Line Items]  
Contract price of vessels acquired $ 21,500