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Loans Payable - Note 5 - SMOM - Additional Information (Detail) - USD ($)		3 Months Ended		6 Months Ended
	May 03, 2017	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jan. 31, 2021	Dec. 31, 2020	Apr. 20, 2018	Mar. 31, 2018	Oct. 01, 2016
Debt Instrument [Line Items]
Aggregate amount issuable										$ 3,000,000.0
Note 5 - SMOM [Member]
Debt Instrument [Line Items]
Aggregate amount issuable	$ 3,000,000.0							$ 3,500,000
Interest rate, stated percentage	10.00%
Annual Principal Payment	$ 500,000
Loan balance		$ 3,500,000		$ 3,500,000
Accrued interest		157,069	$ 87,260	312,421	$ 174,520
Note 5 - SMOM [Member] | Maximum [Member]
Debt Instrument [Line Items]
Convertible debt		2,000,000.0		2,000,000.0
Note 5 - SMOM [Member] | Neptune Minerals, Inc. [Member]
Debt Instrument [Line Items]
Accounts receivable assigned for loan	50.00%
Accounts receivable, gross	$ 0
Note 5 - SMOM [Member] | Aldama Mining Company, S.de R.L. de C.V [Member]
Debt Instrument [Line Items]
Percentage of equity interest	10.00%
Value of equity interest	$ 1,000,000.0
Note 5 - SMOM [Member] | Aldama Mining Company, S.de R.L. de C.V [Member] | Maximum [Member]
Debt Instrument [Line Items]
Percentage of equity interest	50.00%
Note 7 - Monaco 2018 [Member]
Debt Instrument [Line Items]
Aggregate amount issuable		$ 1,099,366		$ 1,099,366			$ 1,099,366
Interest rate, stated percentage		10.00%		10.00%
Loan balance									$ 1,000,000.0
Accrued interest		$ 68,583	$ 35,018	$ 133,476	$ 67,794
Interest rate, increased percentage						18.00%

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