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Shareholders' Equity and Capital Stock - Outstanding RSUs (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
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Dec. 31, 2014
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| Number of unvested units | 651,639us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber | 379,435us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber |
| Remaining life (years) | 1 year 7 months 6 days | |
| Aggregate value | $ 619us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue | |
| Awards Granted 2013 December 27 [Member] | ||
| Number of unvested units |
119,419us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardDateAxis = urg_AwardsGranted2013December27Member |
|
| Remaining life (years) | 8 months 27 days | |
| Aggregate value |
113us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardDateAxis = urg_AwardsGranted2013December27Member |
|
| Awards Granted 2014 December 12 [Member] | ||
| Number of unvested units |
257,646us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardDateAxis = urg_AwardsGranted2014December12Member |
|
| Remaining life (years) | 1 year 8 months 12 days | |
| Aggregate value |
245us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardDateAxis = urg_AwardsGranted2014December12Member |
|
| Awards Granted 2017 March 13 [Member] | ||
| Number of unvested units |
274,574us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardDateAxis = urg_AwardsGranted2017March13Member |
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| Remaining life (years) | 1 year 11 months 12 days | |
| Aggregate value |
$ 261us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardDateAxis = urg_AwardsGranted2017March13Member |
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- Definition
The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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