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13. Business Segments (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Total revenues	$ 2,947,381us-gaap_Revenues	$ 2,952,314us-gaap_Revenues
Production costs	2,517,746us-gaap_ProductionCosts	2,467,304us-gaap_ProductionCosts
Depreciation and amortization	221,309us-gaap_DepreciationDepletionAndAmortization	187,473us-gaap_DepreciationDepletionAndAmortization
Other operating costs	649,904us-gaap_OtherCostOfOperatingRevenue	648,813us-gaap_OtherCostOfOperatingRevenue
Other operating income	(932,218)us-gaap_OtherOperatingIncome	(5,451)us-gaap_OtherOperatingIncome
Total operating expenses	2,456,741us-gaap_OperatingCostsAndExpenses	3,298,139us-gaap_OperatingCostsAndExpenses
Gross profit (loss)	(104,053)us-gaap_GrossProfit	(52,540)us-gaap_GrossProfit
Other income (expense):	445,640us-gaap_OperatingIncomeLoss	(345,825)us-gaap_OperatingIncomeLoss
Other income:	3,168us-gaap_OtherNonoperatingIncome
Other (expense):	(8,780)us-gaap_OtherNonoperatingExpense
Income (loss) before income taxes	440,028us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	(358,170)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
NET INCOME (LOSS)	440,028us-gaap_NetIncomeLoss	(358,170)us-gaap_NetIncomeLoss
United States Antimony [Member]
Total revenues	2,362,621us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	2,293,865us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Production costs	849,513us-gaap_ProductionCosts / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	1,427,417us-gaap_ProductionCosts / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Depreciation and amortization	16,434us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	16,165us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Other operating costs	483,024us-gaap_OtherCostOfOperatingRevenue / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	393,763us-gaap_OtherCostOfOperatingRevenue / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Other operating income	(919,970)us-gaap_OtherOperatingIncome / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Total operating expenses	429,001us-gaap_OperatingCostsAndExpenses / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	1,837,345us-gaap_OperatingCostsAndExpenses / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Gross profit (loss)	1,933,620us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	456,520us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Other income (expense):		(12,631)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Other income:	2,651us-gaap_OtherNonoperatingIncome / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Other (expense):	(6,749)us-gaap_OtherNonoperatingExpense / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Income (loss) before income taxes	1,929,522us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	443,889us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
NET INCOME (LOSS)	1,929,522us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	443,889us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Mexico Antimony [Member]
Total revenues
Production costs	1,012,712us-gaap_ProductionCosts / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	667,706us-gaap_ProductionCosts / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Depreciation and amortization	148,875us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	116,406us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Other operating costs	73,599us-gaap_OtherCostOfOperatingRevenue / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	131,890us-gaap_OtherCostOfOperatingRevenue / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Other operating income	(12,248)us-gaap_OtherOperatingIncome / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	(5,451)us-gaap_OtherOperatingIncome / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Total operating expenses	1,222,938us-gaap_OperatingCostsAndExpenses / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	910,551us-gaap_OperatingCostsAndExpenses / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Gross profit (loss)	(1,222,938)us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	(910,551)us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Other income (expense):
Other income:
Other (expense):	(468)us-gaap_OtherNonoperatingExpense / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Income (loss) before income taxes	(1,223,406)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	(910,551)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
NET INCOME (LOSS)	(1,223,406)us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	(910,551)us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Hillgrove Antimony [Member]
Total revenues
Production costs	247,183us-gaap_ProductionCosts / us-gaap_StatementBusinessSegmentsAxis = UAMY_HillgroveAntimonyMember
Depreciation and amortization
Other operating costs
Other operating income
Total operating expenses	247,183us-gaap_OperatingCostsAndExpenses / us-gaap_StatementBusinessSegmentsAxis = UAMY_HillgroveAntimonyMember
Gross profit (loss)	(247,183)us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = UAMY_HillgroveAntimonyMember
Other income:
Other (expense):
Income (loss) before income taxes	(247,183)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = UAMY_HillgroveAntimonyMember
NET INCOME (LOSS)	(247,183)us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_HillgroveAntimonyMember
Zeolite [Member]
Total revenues	584,760us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	658,449us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Production costs	408,338us-gaap_ProductionCosts / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	372,181us-gaap_ProductionCosts / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Depreciation and amortization	56,000us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	54,902us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Other operating costs	138,281us-gaap_OtherCostOfOperatingRevenue / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	123,159us-gaap_OtherCostOfOperatingRevenue / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Other operating income
Total operating expenses	602,619us-gaap_OperatingCostsAndExpenses / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	550,242us-gaap_OperatingCostsAndExpenses / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Gross profit (loss)	(17,859)us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	108,207us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Other income (expense):		285us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Other income:	517us-gaap_OtherNonoperatingIncome / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Other (expense):	(1,563)us-gaap_OtherNonoperatingExpense / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
Income (loss) before income taxes	(18,905)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	108,492us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember
NET INCOME (LOSS)	$ (18,905)us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	$ 108,492us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember

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The capitalized costs incurred during the period (excluded from amortization) to operate and maintain wells and related equipment and facilities, including depreciation and applicable operating costs of support equipment and facilities and other costs of operating and maintaining those wells and related equipment and facilities. They become part of the cost of oil and gas produced. Examples of production costs (sometimes called lifting costs) are: costs of labor to operate the wells and related equipment and facilities; repairs and maintenance; materials, supplies, and fuel consumed and supplies utilized in operating the wells and related equipment and facilities; property taxes and insurance applicable to proved properties and wells and related equipment and facilities; severance taxes; some support equipment or facilities may serve two or more oil and gas producing activities and may also serve transportation, refining, and marketing activities. To the extent that the support equipment and facilities are used in oil and gas producing activities, their depreciation and applicable operating costs become exploration, development or production costs, as appropriate. Depreciation, depletion, and amortization of capitalized acquisition, exploration, and development costs are not production costs but also become part of the cost of oil and gas produced along with production (lifting) costs identified above.

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