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SUBSEQUENT EVENT (Details)	3 Months Ended
	Mar. 31, 2022 $ / shares
Class A and C [Member] | Forecast [Member]
SUBSEQUENT EVENT (Details) [Line Items]
Monthly Dividend Declared	$ 0.0075

X

- Definition

Monthly declared dividend per share.

+ References

No definition available.

+ Details

Name:	grow_MonthlyDividendDeclared
Namespace Prefix:	grow_
Data Type:	dtr:perShareItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	grow_SUBSEQUENTEVENTDetailsLineItems
Namespace Prefix:	grow_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=grow_ClassAAndCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: