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16. Business Segments (Details 1) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Capital Expenditure | $ 3,575,408 | $ 3,934,961 | $ 2,473,750
United States Antimony [Member] |  |  |
Capital Expenditure | 100,158 | 288,364 | 160,536
Mexico Antimony [Member] |  |  |
Capital Expenditure | 3,299,027 | 3,318,552 | 1,988,345
Subtotal Antimony [Member] |  |  |
Capital Expenditure | 3,399,185 | 3,606,916 | 2,148,881
Zeloite (Member) |  |  |
Capital Expenditure | $ 176,223 | $ 328,045 | $ 324,869

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