Vessels - Vessel and Vessel Improvements (Details) - Vessels and Vessel Improvements	9 Months Ended
	Sep. 30, 2020 USD ($)
Movement in Property, Plant and Equipment [Roll Forward]
Vessels and vessel improvements, beginning balance	$ 835,959,084
Purchase of vessel improvements	605,660
Sale of vessel	(4,552,628)
Vessel held for sale	(5,475,370)
Scrubbers and BWTS	38,884,772
Depreciation expense	(31,850,808)
Vessels and vessel improvements, ending balance	$ 833,570,710