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Note 10 - Benefit Plans (Details Textual) - USD ($)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Defined Contribution Plan, Employer Matching Contribution, Percent for First Compensation Slab	100.00%
Percentage of First Compensation	3.00%
Defined Contribution Plan, Employer Matching Contribution, Percent for Next Compensation Slab	50.00%
Percentage of Next Compensation	2.00%
Defined Contribution Plan, Cost	$ 116,000	$ 121,000
Defined Contribution Plan, Employer Profit Sharing Contribution Amount	100,000	100,000
Defined Contribution Plan, Employer Matching Contribution, Amount	$ 12,000	$ 12,000
Employee Stock Purchase Plan [Member]
Treasury Stock, Shares, Purchased by Employees (in shares)	30,247	24,460
Employee Stock Purchase Plan, Employer Matching Contribution Amount	$ 52,000	$ 49,000

X

- Definition

Amount of matching contribution amount made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	grow_DefinedContributionPlanEmployerMatchingContributionAmount
Namespace Prefix:	grow_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Defined contribution plan employer matching contribution percent for first compensation slab.

+ References

No definition available.

+ Details

Name:	grow_DefinedContributionPlanEmployerMatchingContributionPercentForFirstCompensationSlab
Namespace Prefix:	grow_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Defined contribution plan employer matching contribution percent for next compensation slab.

+ References

No definition available.

+ Details

Name:	grow_DefinedContributionPlanEmployerMatchingContributionPercentForNextCompensationSlab
Namespace Prefix:	grow_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of profit sharing contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	grow_DefinedContributionPlanEmployerProfitSharingContributionAmount
Namespace Prefix:	grow_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Employee stock purchase plan employer matching contribution.

+ References

No definition available.

+ Details

Name:	grow_EmployeeStockPurchasePlanEmployerMatchingContributionAmount
Namespace Prefix:	grow_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of first compensation.

+ References

No definition available.

+ Details

Name:	grow_PercentageOfFirstCompensation
Namespace Prefix:	grow_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of next compensation.

+ References

No definition available.

+ Details

Name:	grow_PercentageOfNextCompensation
Namespace Prefix:	grow_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of treasury stock purchased by employees.

+ References

No definition available.

+ Details

Name:	grow_TreasuryStockSharesPurchasedByEmployees
Namespace Prefix:	grow_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	srt_ShareRepurchaseProgramAxis=grow_EmployeeStockPurchasePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: