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12. Commitments and Contingencies (Details Narrative) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Commitments and Contingencies Disclosure [Abstract] |  |  |
Capitalized mineral rights | $ 86,956 | $ 186,956 | $ 186,956
Accrued Liability | $ 0 | $ 27,503 |

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- Definition Accrued Liability + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Capitalized mineral rights + 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: | us-gaap_
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Balance Type: | na
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