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Risk Management and Fair Value Measurements (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Jan. 19, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Vessel impairment charge   $ 2,282
Vessel held-for-sale   $ 13,190  
Interest Rate Cap [Member]        
Notional amount $ 10,000      
Interest rate cap percentage 3.50%      
Interest rate cap termination date Jul. 18, 2022