Ur-Energy Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Mineral Properties rollforward (Details)

v2.4.1.9

Mineral Properties rollforward (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Balance at beginning of period	$ 52,702us-gaap_MineralPropertiesNet	$ 33,501us-gaap_MineralPropertiesNet
Acquisition costs	50us-gaap_AcquisitionCosts	10,276us-gaap_AcquisitionCosts
Royalty acquired for common stock		783
Increase in reclamation costs	5,669
Reporting exchange rate adjustment	(6)urg_ReportingExchangeRateAdjustment	(36)urg_ReportingExchangeRateAdjustment
Property write-offs	(483)us-gaap_AssetImpairmentCharges	(1,430)us-gaap_AssetImpairmentCharges
Functional Currency exchange rate adjustment		(5,274)
Amortization	(5,182)us-gaap_AdjustmentForAmortization	(435)us-gaap_AdjustmentForAmortization
Purchase of Pathfinder Mines		15,317us-gaap_PaymentsToAcquireMiningAssets
Balance at end of period	52,750us-gaap_MineralPropertiesNet	52,702us-gaap_MineralPropertiesNet
Canadian Properties [Member]
Balance at beginning of period	489	525
Reporting exchange rate adjustment	(6)	(36)
Property write-offs	(483)
Balance at end of period		489
Lost Creek Property
Balance at beginning of period	23,686	15,505
Acquisition costs	8	10,276
Royalty acquired for common stock		783
Functional Currency exchange rate adjustment		(2,443)
Amortization	(5,182)	(435)
Balance at end of period	18,512	23,686
Other Us Properties [Member]
Balance at beginning of period		17,471
Property write-offs		(1,430)
Functional Currency exchange rate adjustment		(2,831)
Balance at end of period	13,210	13,210
Path Finder Mines [Member]
Balance at beginning of period	15,317
Acquisition costs	42
Increase in reclamation costs	5,669
Purchase of Pathfinder Mines		15,317
Balance at end of period	$ 21,028	$ 15,317

- Definition

The assumption amount in estimated asset reclamation obligation.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

No authoritative reference available.

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of reporting exchange rate adjustment.

+ References

No definition available.

+ Details

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- Definition

Value of shares issued during the period in full consideration of the conveyance and termination of the royalty .

+ References

No definition available.

+ Details

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Namespace Prefix:	urg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-10.(c)(7)(ii))

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 10

-Paragraph c

-Subparagraph 3(ii)(A)

-Article 4

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Balance Type:	debit
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- Definition

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

+ References

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Balance Type:	debit
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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

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- Definition

Mineral properties, net of adjustments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

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-Topic 932

-SubTopic 360

-Section 25

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow from the purchase of mining and mining related assets during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

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