Note 4 - Investment Management and Other Fees (Details Textual) - USD ($)	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024
Investment Advisory Fees, Fee Adjustment Percent, Minimum Performance to Designed Benchmark Over Prior Rolling 12 Months	5.00%
Accounts Receivable, Allowance for Credit Loss	$ 0	$ 0
Fund Clients [Member]
Receivables, Net, Current	683,000	772,000
Accounts Receivable, Allowance for Credit Loss	$ 0	0
U S Global E T Fs [Member]
Unitary Management Fee, Percentage of Average Net Assets	0.60%
Aggregate Fees Waived and Expenses Borne	$ 143,000	147,000
U S Global E T Fs [Member] \| Fund Clients [Member]
Receivables, Net, Current	$ 494,000	647,000
U S Global Jets U C I T S E T F [Member]
Unitary Management Fee, Percentage of Average Net Assets	0.69%
U S Global Investors Funds [Member]
Aggregate Fees Waived and Expenses Borne	$ 973,000	840,000
Investment Advisory Fees, Fee Adjustment Base Percentage Adjustment When Fund Performance is Not Within Limits to Benchmark Index	0.25%
Investment Advisory Fees, Fee Adjustment Percent, Minimum Performance to Designed Benchmark Over Prior Rolling 12 Months	5.00%
Annual Administrative Fee Rate	0.05%
U S Global Investors Funds [Member] \| Fund Clients [Member]
Receivables, Net, Current	$ 189,000	$ 125,000

Aggregate fees waived and expenses borne.

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- Definition

Annual administrative fee rate.

+ References

No definition available.

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- Definition

Base percentage adjustment when fund performance is not within limits to benchmark index.

+ References

No definition available.

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- Definition

Percent minimum performance to designed benchmark over prior rolling 12 months.

+ References

No definition available.

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- Definition

The unitary management fee as a percentage of average net assets.

+ References

No definition available.

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- Definition

Amount of allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

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The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

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