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17. Business Segments (Details 2) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Capital Expenditure | $ 3,451,317 | $ 1,901,490
United States Antimony [Member] |  |
Capital Expenditure | 62,328 | 70,076
Mexico Antimony [Member] |  |
Capital Expenditure | 3,192,751 | 1,706,647
Subtotal Antimony [Member] |  |
Capital Expenditure | 3,255,079 | 1,776,723
Zeloite (Member) |  |
Capital Expenditure | $ 196,238 | $ 124,767

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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

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=UAMY_UnitedStatesAntimonyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=UAMY_MexicoAntimonyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=UAMY_SubtotalAntimonyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=UAMY_ZeoliteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |