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Basis of Presentation and General Information (Details Narrative)
 3 Months Ended 11 Months Ended
Mar. 27, 2019
USD ($)
shares
Nov. 27, 2018
Dec. 31, 2020
Property, Plant and Equipment [Line Items]      
Number of vessels     14
Reverse unit split, description one for seven reverse unit split    
Transaction agreement with DSS Holdings L.P. [Member]      
Property, Plant and Equipment [Line Items]      
Date of transaction agreement   November 27, 2018  
Closing date of Transaction agreement March 27, 2019    
Transaction agreement with DSS Holdings L.P. [Member] | DSS Loan [Member]      
Property, Plant and Equipment [Line Items]      
Expiration period of line of credit 5 years    
Credit facility, maximum borrowing capacity $ 360,000    
Transaction agreement with DSS Holdings L.P. [Member] | Athena renamed to Diamond S [Member]      
Property, Plant and Equipment [Line Items]      
Partnership contribution of the Crude and Product tanker business the Partnership agreed to contribute to Athena the Crude and Product tanker business, associated inventories, $10,000 in cash plus prorated charter hire and net payments received from February 20, 2019 onwards with specific arrangements relating to the funding of working capital    
Cash received $ 10,000    
Shares to be distributed | shares 12,725,000    
Neo Panamax Container Carrier Vessels [Member]      
Property, Plant and Equipment [Line Items]      
Number of vessels     13
Capesize Bulk Carrier [Member]      
Property, Plant and Equipment [Line Items]      
Number of vessels     1