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v3.20.4

Restricted Cash (Details Narrative) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Surety Bond [Member] |  |
Represents the amount of reclamation obligations, which are required to be covered by surety performance bonding, as of the balance sheet date. | $ 27.8 | $ 29.9

X
- References No definition available. + Details
Name: | urg_ReclamationBondingRequirement
Namespace Prefix: | urg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_SuretyBondMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |