Subsequent Events (Details) - USD ($)		3 Months Ended			6 Months Ended
	Jul. 09, 2020	Sep. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Subsequent Event [Line Items]
Loss on sale of vessels			$ 0	$ (966,802)	$ 0	$ (5,073,349)
Subsequent Event | Vessel Goldeneye
Subsequent Event [Line Items]
Agreed upon sales price	$ 5,000,000.0
Subsequent Event | Vessel Goldeneye | Forecast
Subsequent Event [Line Items]
Loss on sale of vessels		$ 100,000