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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% |

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