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Related Party Transactions Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]      
Dividends payable $ 1,005,763 $ 631,961 $ 4,063,598
Technical management fees 2,761,800 3,364,200  
Accounts Payable and Accrued Expenses | Seamar      
Related Party Transaction [Line Items]      
Trade payables due to related party 4,151,192 5,679,768  
2013 common stock dividend      
Related Party Transaction [Line Items]      
Dividends payable $ 0 $ 478,359 $ 4,063,598