INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
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%
U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Aggregate Fees Waived and Expenses Borne	$ 701	$ 584
Administrative fee rate	0.05%	0.05%
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 Jets UCITS ETF [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Unitary Management Fee, Percentage of Average Net Assets	0.65%
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%
Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	$ 2,400	$ 869
Fund Clients [Member] | U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	432	187
Fund Clients [Member] | U.S. Global ETFs [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables, Net, Current	$ 2,000	$ 682