Note 11 - Asset Retirement Obligations - Undiscounted Amounts of Estimated Cash Flows for the Next Five Fiscal Years and Beyond (Details)	Jan. 31, 2021 USD ($)
Fiscal 2022
Fiscal 2023
Fiscal 2024
Fiscal 2025
Fiscal 2026
Remaining balance	8,221,018
Undiscounted Amount of Estimated Cash Flows	$ 8,221,018

Amount of estimated cash flows associated with the asset retirement obligation.

No definition available.

Name:	uec_UndiscountedAmountOfEstimatedCashFlows
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The estimated amounts and timing of cash flows and assumptions used for asset retirement obligation due after the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	uec_UndiscountedAmountOfEstimatedCashFlowsDueAfterFifthYear
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The estimated amounts and timing of cash flows and assumptions used for asset retirement obligation in the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	uec_UndiscountedAmountOfEstimatedCashFlowsDueInFifthYear
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The estimated amounts and timing of cash flows and assumptions used for asset retirement obligation due in the fourth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	uec_UndiscountedAmountOfEstimatedCashFlowsDueInFourthYear
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The estimated amounts and timing of cash flows and assumptions used for asset retirement obligation due in next twelve months.

+ References

No definition available.

+ Details

Name:	uec_UndiscountedAmountOfEstimatedCashFlowsDueInNextTwelveMonths
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The estimated amounts and timing of cash flows and assumptions used for asset retirement obligation due in the second fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	uec_UndiscountedAmountOfEstimatedCashFlowsDueInSecondYear
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The estimated amounts and timing of cash flows and assumptions used for asset retirement obligation due in the third fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	uec_UndiscountedAmountOfEstimatedCashFlowsDueInThirdYear
Namespace Prefix:	uec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant