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INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($) $ in Thousands | 4 Months Ended | 7 Months Ended | 12 Months Ended | 13 Months Ended
--- | --- | --- | --- | ---
Oct. 31, 2014 | Jun. 30, 2015 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 09, 2015
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |  |
Advisory fees |  |  | $ 6,479 | $ 5,185 | $ 6,682 |
Fund Clients [Member] |  |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |  |
Receivables, Net, Current |  |  | 396 |  |  |
Galileo [Member] |  |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |  |
Advisory fees |  |  | $ 1,100 | 1,200 | 2,000 |
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% |  |  |
Increase (decrease) in base advisory fees realized |  |  | $ (49) | (132) | (1,000) |
Aggregate Fees Waived and Expenses Borne |  |  | 1,000 | $ 1,300 | 1,300 |
Administrative services fees, per fund | $ 10 |  |  |  |  | $ 7
U.S. Global Investors Funds [Member] | Investor Class Shares [Member] |  |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |  |
Administrative fee rate | 0.10% | 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 | 0.08% | 0.04% |  | 0.04% |  |
U.S. Global Investors Funds [Member] | Fund Clients [Member] |  |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |  |
Receivables, Net, Current |  |  | $ 287 |  |  |
U.S. Global ETFs [Member] |  |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |  |
Unitary Management Fee, Percentage of Average Net Assets |  |  | 0.60% |  |  |
Advisory fees |  |  | $ 357 | $ 296 | 26 |
Offshore Clients [Member] |  |  |  |  |  |
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items] |  |  |  |  |  |
Advisory fees |  |  | $ 135 | $ 91 | $ 130 |

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