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Income taxes - reconciliation (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Income Tax Disclosure [Abstract] | |||
| Loss before income taxes | $ (8,749)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | $ (30,313)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | $ (17,558)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments |
| Statutory rate | 26.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 26.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 26.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate |
| Expected recovery of income tax | (2,318)urg_IncomeTaxReconciliationEffectOfForeignTaxRateDifferences | (8,033)urg_IncomeTaxReconciliationEffectOfForeignTaxRateDifferences | (4,663)urg_IncomeTaxReconciliationEffectOfForeignTaxRateDifferences |
| Effect of foreign tax rate differences | (619)us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | (3,247)us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | (1,570)us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate |
| Non-deductable amounts | (106)us-gaap_IncomeTaxReconciliationNondeductibleExpense | (108)us-gaap_IncomeTaxReconciliationNondeductibleExpense | (412)us-gaap_IncomeTaxReconciliationNondeductibleExpense |
| Effect of changes in enacted future rates | 65urg_IncomeTaxReconciliationEffectOfChangeInFutureTaxRates | (286)urg_IncomeTaxReconciliationEffectOfChangeInFutureTaxRates | (40)urg_IncomeTaxReconciliationEffectOfChangeInFutureTaxRates |
| Effect of change in foreign exchange rates | 186us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | 161us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | 91us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential |
| Effect of stock based compensation | (159)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost | (7)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost | |
| Change in valuation allowance | $ 2,952us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | $ 11,460us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | $ 5,945us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance |
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying effect of change in future tax rates. No definition available.
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying effect of foreign tax rate differences. No definition available.
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- Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible equity-based compensation costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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