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INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018
Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	$ 340		$ 419
U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Aggregate Fees Waived and Expenses Borne	165	$ 232
U.S. Global Investors Funds [Member] | Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	$ 250		321
U.S. Global ETFs [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Unitary Management Fee, Percentage of Average Net Assets	0.60%
U.S. Global ETFs [Member] | Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	$ 55		54
Investor Class Shares [Member] | U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Administrative fee rate	0.05%
Institutional Class Shares [Member] | U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Administrative fee rate	0.04%
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%
Galileo [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Aggregate Fees Waived and Expenses Borne	$ 116	$ 19
Galileo [Member] | Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	$ 35		$ 44

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Aggregate fees waived and expenses borne.

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Annual administrative fee rate.

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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
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