Financial instruments (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2014
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Credit Concentration Risk | |
Financial Instruments | |
Cash, insured amount |
0.9us-gaap_CashFDICInsuredAmount / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember |
Cash, uninsured amount |
9.8us-gaap_CashUninsuredAmount / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember |
Credit Availability Concentration Risk | |
Financial Instruments | |
Accounts Payable, Trade, Current |
3.0us-gaap_AccountsPayableTradeCurrent / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditAvailabilityConcentrationRiskMember |
Interest Rate Risk | |
Financial Instruments | |
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Discount Rate |
0.6us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInDiscountRate / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_InterestRateRiskMember |
Minimum | Credit Concentration Risk | |
Financial Instruments | |
Investment Interest Rate |
0.18%invest_InvestmentInterestRate / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Minimum | Credit Availability Concentration Risk | |
Financial Instruments | |
Debt Instrument, Term | 0 years |
Maximum | Credit Concentration Risk | |
Financial Instruments | |
Investment Interest Rate |
0.40%invest_InvestmentInterestRate / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Maximum | Credit Availability Concentration Risk | |
Financial Instruments | |
Debt Instrument, Term | 7 years |
Maximum | Currency Risk | |
Financial Instruments | |
Foreign Currency Cash And Cash Equivalents At Carrying Value |
0.1urg_ForeignCurrencyCashAndCashEquivalentsAtCarryingValue / us-gaap_ConcentrationRiskByTypeAxis = urg_CurrencyRiskMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
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- Definition
The interest rate for investments that have an interest rate. For fixed rate investments, this indicates the fixed interest rate. If the investment has a variable interest rate, the rate stated here may be the rate that is currently relevant. In this case the "Investment, Interest Rate is Current Rate for Variable Rate Investment Flag", "Investment, Interest Rate is Discount Rate at Purchase Flag", "Investment, Interest Rate Reflects Current Yield Flag" should be used. If one of these flags are not appropriate to explain the interest rate that is indicated, then a new flag should be added or an explanation should be included in "Investment, Additional Information". Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of foreign currency on hand as well as demand deposits with banks or financial institutions. No definition available.
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- Definition
Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. No definition available.
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- Definition
The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. No definition available.
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- Definition
Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition
The hypothetical financial impact of a 10 percent adverse change of the discount rate on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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