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Basis of Presentation and General Information: (Details Narrative)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]  
Entity Incorporation, Date of Incorporation Dec. 13, 2006
Number of vessels owned 116
Charterer A [Member]  
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]  
Accounts receivable $ 2,526
Combined carrying capacity [Member]  
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]  
Vessel Capacity in DWT 12,900,000
Minimum [Member]  
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]  
Vessel Capacity in DWT 52,425
Maximum [Member]  
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]  
Vessel Capacity in DWT 209,537