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Advances for Vessel Under Construction and Acquisitions - Summary of Advances for Vessels Under Construction and Acquisitions (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]    
Beginning balance $ 2,988,903 $ 0
Advance for vessel under construction 2,891,283 2,891,283
Capitalized interest 168,344 97,620
Supervision fees 210,970  
Other Capitalized Expenses 279,615  
Ending balance $ 6,539,115 $ 2,988,903