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LongTerm Debt (Details Narrative)	Dec. 31, 2020 USD ($)
Long-Term Debt
Note payable to First Security Bank of Missoula	$ 100,000

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+ Details

Name:	uamy_NotePayableToFirstSecurityBankOfMissoula
Namespace Prefix:	uamy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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Name:	us-gaap_DebtDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration