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INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
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 | $ 732 | $ 637
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 | $ 371 | 419
Fund Clients [Member] | U.S. Global Investors Funds [Member] |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |
Receivables, Net, Current | 159 | 321
Fund Clients [Member] | U.S. Global ETFs [Member] |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |
Receivables, Net, Current | $ 42 | $ 54
Investor Class Shares [Member] | U.S. Global Investors Funds [Member] |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |
Administrative fee rate | 0.05% | 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% | 0.04%
Galileo [Member] |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |
Aggregate Fees Waived and Expenses Borne | $ 343 | $ 88
Galileo [Member] | Fund Clients [Member] |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |
Receivables, Net, Current | $ 170 | $ 44
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% |

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