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INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019 | Jun. 30, 2019
U.S. Global Investors Funds [Member] |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |
Aggregate Fees Waived and Expenses Borne | $ 141 | $ 164 | $ 407 | $ 541 |
U.S. Global Investors Funds [Member] | Equity Funds [Member] |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |
Base percentage adjustment, fund performance not within benchmark index | 0.25% |  | 0.25% |  |
Minimum performance to designated benchmark over prior rolling twelve months, percent | 5.00% |  | 5.00% |  |
U.S. Global ETFs [Member] |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |
Unitary Management Fee, Percentage of Average Net Assets |  |  | 0.60% |  |
Fund Clients [Member] |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |
Receivables, Net, Current | $ 264 |  | $ 264 |  | $ 201
Fund Clients [Member] | U.S. Global Investors Funds [Member] |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |
Receivables, Net, Current | 167 |  | 167 |  | 159
Fund Clients [Member] | U.S. Global ETFs [Member] |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |
Receivables, Net, Current | $ 97 |  | $ 97 |  | $ 42
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%

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