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Sale of vessels previously held under Capital Leases (Details 1) - USD ($)
Jun. 30, 2016
Dec. 31, 2015
Capital Leased Assets [Line Items]    
Current portion of capital lease obligations $ 0 $ 26,771,911
Capital Lease Obligations [Member]    
Capital Leased Assets [Line Items]    
Current portion of capital lease obligations 0 27,097,348
Current portion of deferred finance fees 0 (325,437)
Total capital lease obligations $ 0 $ 26,771,911