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INVESTMENT MANAGEMENT AND OTHER FEES (Details) - Disaggregation of Revenue - USD ($) $ in Thousands | 3 Months Ended
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Sep. 30, 2018 | Sep. 30, 2017
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 1,223 | $ 1,490
Investment and Advisory Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,170 | 1,433
Administrative Service [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 53 | 57
Investment Management Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,044 | 1,272
Investment Management Services - Canada [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 179 | 218
U.S. Global Investors Funds [Member] | Administrative Service [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 53 | 57
U.S. Global Investors Funds [Member] | Base Advisory Fees [Member] | Investment and Advisory Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 911 | 1,145
U.S. Global Investors Funds [Member] | Investment Performance [Member] | Investment and Advisory Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | (86) | (116)
U.S. Global ETFs [Member] | Investment and Advisory Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 166 | 185
Offshore Clients [Member] | Investment and Advisory Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 1
Investment Management Services - Canada [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 179 | 218
Investment Management Services - Canada [Member] | Base Advisory Fees [Member] | Investment and Advisory Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 179 | 218
Investment Management Services - Canada [Member] | Investment Performance [Member] | Investment and Advisory Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 0 | $ 0

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