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Common Stock and Non-Controlling Interest - Non-controlling Interest (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Noncontrolling Interest [Line Items]    
Retained Earnings $ 23,179,805 $ 12,736,580
NBHC    
Noncontrolling Interest [Line Items]    
Noncontrolling interest in variable interest entity 50,067,000 71,003,403
Nordic Bulk Ventures Holding Company Ltd, Bulk Nordic Five Ltd and Bulk Nordic Six Ltd    
Noncontrolling Interest [Line Items]    
Retained Earnings $ 1,598,000 $ 1,822,000