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v3.25.1

Restricted Cash and Cash Equivalents - Additional Disclosure (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Surety bond |  |
Restricted Cash and Cash Equivalents |  |
Reclamation bonding requirement | $ 42.4 | $ 42.2

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- Definition Represents the amount of reclamation obligations, which are required to be covered by surety performance bonding, as of the balance sheet date. + 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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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