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17. Business Segments (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Capital Expenditure | $ 1,901,490 UAMY_CapitalExpenditure | $ 3,575,408 UAMY_CapitalExpenditure | $ 3,934,961 UAMY_CapitalExpenditure
United States Antimony [Member] |  |  |
Capital Expenditure | 70,076 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember | 100,158 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember | 288,364 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Mexico Antimony [Member] |  |  |
Capital Expenditure | 1,706,647 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember | 3,299,027 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember | 3,318,552 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Subtotal Antimony [Member] |  |  |
Capital Expenditure | 1,776,723 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_SubtotalAntimonyMember | 3,399,185 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_SubtotalAntimonyMember | 3,606,916 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_SubtotalAntimonyMember
Zeloite (Member) |  |  |
Capital Expenditure | $ 124,767 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember | $ 176,233 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember | $ 328,045 UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember

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

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |