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Note 18 - Subsequent Events (Details Textual) - USD ($)	2 Months Ended	12 Months Ended
	Sep. 04, 2025	Jun. 30, 2025	Jun. 30, 2024
Equity Securities Without Readily Determinable Fair Values, Unrealized Gain (Loss)		$ (362,000)	$ (1,000,000)
Subsequent Event [Member]
Equity Securities Without Readily Determinable Fair Values, Unrealized Gain (Loss)	$ 1,300,000

X

- Definition

Amount of unrealized gain (loss) on investment in equity security without readily determinable fair value with change in fair value recognized in net income.

+ References

No definition available.

+ Details

Name:	grow_EquitySecuritiesWithoutReadilyDeterminableFairValuesUnrealizedGainLoss
Namespace Prefix:	grow_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: