INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Revenues	$ 6,261	$ 6,763
Administrative Service [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Revenues	248	284
Galileo [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Aggregate Fees Waived and Expenses Borne	88	53
Galileo [Member] \| Base Advisory Fee [Member[
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Revenues	960	1,100
Galileo [Member] \| Investment Performance [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Revenues	464
Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	419	396
U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Increase (decrease) in base advisory fees realized	(539)	(49)
Aggregate Fees Waived and Expenses Borne	637	1,000
U.S. Global Investors Funds [Member] \| Base Advisory Fee [Member[
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Revenues	4,400	4,900
U.S. Global Investors Funds [Member] \| Administrative Service [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Revenues	$ 248	$ 284
U.S. Global Investors Funds [Member] \| Investor Class Shares [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Administrative fee rate	0.05%	0.05%
U.S. Global Investors Funds [Member] \| Institutional Class Shares [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Administrative fee rate	0.04%	0.04%
U.S. Global Investors Funds [Member] \| Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	$ 321	$ 287
U.S. Global ETFs [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Revenues	$ 701	357
Unitary Management Fee, Percentage of Average Net Assets	0.60%
Offshore Clients [Member] \| Base Advisory Fee [Member[
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Revenues	$ 3	$ 135
Equity Funds [Member] \| U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Base percentage adjustment, fund performance not within benchmark index	0.25%
Minimum performance to designated benchmark over prior rolling twelve months, percent	5.00%

Aggregate fees waived and expenses borne.

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Annual administrative fee rate.

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Increase (decrease) in base advisory fees realized.

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

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

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

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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