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4. Accounts Receivable and Due to Factor (Details Narrative) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Accounts Receivable And Due To Factor Details Narrative |  |  |
Factoring Expense | $ 49,364 UAMY_FactoringExpense | $ 71,772 UAMY_FactoringExpense | $ 78,100 UAMY_FactoringExpense
Net accounts receivable factored during the year | $ 2,300,000 UAMY_NetAccountsReceivableFactoredDuringYear | $ 3,280,000 UAMY_NetAccountsReceivableFactoredDuringYear | $ 3,800,000 UAMY_NetAccountsReceivableFactoredDuringYear

X
- Details
Name: | UAMY_AccountsReceivableAndDueToFactorDetailsNarrativeAbstract
Namespace Prefix: | UAMY_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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