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4. Accounts Receivable and Due to Factor (Details Narrative) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Accounts Receivable And Due To Factor Details Narrative |  |
Factoring Expense | $ 35,993 | $ 35,182
Net accounts receivable factored during the year | $ 1,700,000 | $ 1,800,000

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- References No definition available. + Details
Name: | UAMY_AccountsReceivableAndDueToFactorDetailsNarrativeAbstract
Namespace Prefix: | UAMY_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | UAMY_FactoringExpense
Namespace Prefix: | UAMY_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | UAMY_NetAccountsReceivableFactoredDuringYear
Namespace Prefix: | UAMY_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration