Note 7 - Equity-accounted Investment - Change in Carrying Value of the Investment (Details)	6 Months Ended
Jan. 31, 2019 USD ($)
Balance, July 31, 2018	$ 693,502
Consideration Shares received from sale of royalty interests	9,077,842
Share of loss from URC	(74,742)
Gain on ownership interest dilution	356,774
Gain from foreign currency translation	38,232
Balance, January 31, 2019	$ 10,091,608

Amount of gain (loss) from foreign currency translation of an equity method investment.

No definition available.

Name:	uec_EquityMethodInvestmentGainLossFromForeignCurrencyTranslation
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the entity's proportionate share for the period of the net gain on ownership interest dilution of its invested (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied.

+ References

No definition available.

+ Details

Name:	uec_GainOnOwnershipInterestDilution
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the entity's proportionate share for the period of the net loss of its invested (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied.

+ References

No definition available.

+ Details

Name:	uec_Lossfromequitymethodinvestments
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of share consideration from sale of royalty interests.

+ References

No definition available.

+ Details

Name:	uec_ShareConsiderationAmountFromSaleOfRoyaltyInterests
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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