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Basis of Presentation and General Information - Risk Concentration (Table) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Voyage revenues
Concentration Risk [Line Items]
Concentration of Risk	10.00%
Charterer A
Concentration Risk [Line Items]
Concentration of Risk	13.00%	15.00%
Accounts receivable	$ 2,876
Charterer B
Concentration Risk [Line Items]
Concentration of Risk			14.00%

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- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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