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Loans Payable - Note 12 - Vendor note payable - Additional Information (Detail) - USD ($)		3 Months Ended
	Jun. 30, 2018	Mar. 31, 2021	Mar. 31, 2020
Trade payable, interest bearing interest rate		12.00%
Trade payable in accounts payable		$ 484,009
Collateral asset carrying value		0
Interest Expense		2,380,476	$ 1,335,618
Magellan Offshore Services Ltd [Member]
Interest Expense		$ 14,321	$ 14,480
Magellan Offshore Services Ltd [Member] | Marine Equipment [Member]
Proceeds from sale of marine equipment	$ 1,000,000
Contingent liability	$ 500,000
Collateral Agreement [Member]
Debt instrument maturity date		Aug. 31, 2018

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