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Basis of Presentation and General Information - Concentration Risk by Charterer (Details) - Sales Revenue, Net [Member] - Product Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Charterer A [Member]
Concentration risk, percentage	15.00%	12.00%
Charterer B [Member]
Concentration risk, percentage		10.00%
Charterer C [Member]
Concentration risk, percentage	10.00%	10.00%

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 275
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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