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13. Business Segments (Details 1) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Capital Expenditure	$ 315,187	$ 472,626
United States Antimony [Member]
Capital Expenditure	58,541	49,782
Mexico Antimony [Member]
Capital Expenditure	227,589	389,053
Subtotal Antimony [Member]
Capital Expenditure	286,130	438,835
Zeolite [Member]
Capital Expenditure	$ 29,057	$ 33,791

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- Definition

Custom Element.

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No definition available.

+ Details

Name:	UAMY_CapitalExpenditure
Namespace Prefix:	UAMY_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration