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14. Income Taxes (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Computed expected tax provision (benefit)	$ (558,409)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (494,102)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (137,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Foreign taxes	62,508us-gaap_IncomeTaxReconciliationTaxCreditsForeign	78,768us-gaap_IncomeTaxReconciliationTaxCreditsForeign	34,641us-gaap_IncomeTaxReconciliationTaxCreditsForeign
Other(1)	(1,346,130)us-gaap_IncomeTaxReconciliationOtherAdjustments	899,260us-gaap_IncomeTaxReconciliationOtherAdjustments	61,770us-gaap_IncomeTaxReconciliationOtherAdjustments
Change in valuation allowance U.S.	194,925us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	(494,102)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	207,696us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Change in valuation allowance Foreign	1,647,106UAMY_ChangeInValuationAllowanceForeign	78,768UAMY_ChangeInValuationAllowanceForeign
Release of valuation allowance foreign		899,260UAMY_ReleaseOfValuationAllowanceForeign	0UAMY_ReleaseOfValuationAllowanceForeign
Income tax (expense)	$ 0us-gaap_IncomeTaxExpenseBenefit	$ 229,451us-gaap_IncomeTaxExpenseBenefit	$ 167,107us-gaap_IncomeTaxExpenseBenefit
Computed expected tax provision (benefit), Percent	(35.00%)us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	(35.00%)us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	(35.00%)us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Foreign taxes, Percent	3.90%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	5.60%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	8.90%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign
Other(1), Percent	(84.40%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments	63.70%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments	15.80%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Changee in valuation allowance U.S., Percent	12.20%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	5.10%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	53.10%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Change in valuation allowance Foreign	103.20%UAMY_ChangeInValuationAllowanceForeignPercent
Release of valuation allowance foreign, Percent		(23.10%)UAMY_ReleaseOfValuationAllowanceForeignPercent	0.00%UAMY_ReleaseOfValuationAllowanceForeignPercent
Total, Percent	0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations	16.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations	42.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations

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