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Derivative Liability - Schedule of Changes in Derivative Liability Related to Conversion Feature (Details) (Parenthetical) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Fair Value Of Derivative Liability One [Member]    
Proceeds from issuance of debt $ 2,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_DebtInstrumentAxis
= URRE_FairValueOfDerivativeLiabilityOneMember		   
Fair Value Of Derivative Liability Two [Member]    
Proceeds from issuance of debt $ 3,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_DebtInstrumentAxis
= URRE_FairValueOfDerivativeLiabilityTwoMember		 $ 3,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_DebtInstrumentAxis
= URRE_FairValueOfDerivativeLiabilityTwoMember