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FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | $ 6,261 | $ 6,763
Galileo [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Percentage of shares issued and outstanding of Galileo | 65.00% |
Investment Management Services [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | $ 4,837 | 5,663
Investment Management Services - Canada [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | 1,424 | 1,100
U.S. Global Investors Funds [Member] | Investment Management Services [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | 4,100 | 5,200
U.S. Global ETFs [Member] | Investment Management Services [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | 701 | 357
Galileo Funds [Member] | Investment Management Services - Canada [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | $ 1,400 | 866
Other advisory clients [Member] | Investment Management Services - Canada [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues |  | $ 220

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