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Transactions with Related Parties - Additional Information - Interchart (Details) - Interchart Shipping Inc. - USD ($)
$ in Thousands
12 Months Ended 14 Months Ended
Dec. 31, 2020
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2014
Related Party Transaction [Line Items]        
Percentage of total outstanding common shares       33.00%
Services Agreement        
Related Party Transaction [Line Items]        
Monthly lump sum fee   $ 275    
Expiration date of agreement   Dec. 31, 2018    
New Service Agreement        
Related Party Transaction [Line Items]        
Monthly lump sum fee     $ 325  
Expiration date of agreement     Dec. 31, 2019  
New Service Agreement | Subsequent Event        
Related Party Transaction [Line Items]        
Monthly lump sum fee $ 315      
Expiration date of agreement Dec. 31, 2020