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Basis of Presentation (Details Narrative) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash balance, beginning	$ 4,000
Cash balance, ending	3,900
Payments to acquire cash restricted investments	$ 23

X

- Definition

Payments to acquire cash restricted investments.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_Cash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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