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FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating revenues | $ 1,471 | $ 1,669 | $ 1,642 | $ 1,981 | $ 1,636 | $ 1,330 | $ 1,289 | $ 1,250 | $ 6,763 | $ 5,505 | $ 7,333
Investment Management Services [Member] |  |  |  |  |  |  |  |  |  |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating revenues |  |  |  |  |  |  |  |  | 5,663 | 4,341 | 5,326
Investment Management Services [Member] | U.S. Global Investors Funds [Member] |  |  |  |  |  |  |  |  |  |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating revenues |  |  |  |  |  |  |  |  | 5,200 | 4,000 | 5,200
Investment Management Services [Member] | U.S. Global Investors Funds [Member] | Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating revenues |  |  |  |  |  |  |  |  |  | 608 | 2,000
Investment Management Services - Canada [Member] |  |  |  |  |  |  |  |  |  |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating revenues |  |  |  |  |  |  |  |  | 1,100 | 1,164 | 2,007
Investment Management Services - Canada [Member] | Galileo Funds [Member] |  |  |  |  |  |  |  |  |  |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating revenues |  |  |  |  |  |  |  |  | 866 | 900 | 1,600
Investment Management Services - Canada [Member] | Other advisory clients [Member] |  |  |  |  |  |  |  |  |  |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating revenues |  |  |  |  |  |  |  |  | $ 220 | $ 254 | $ 354
Galileo [Member] |  |  |  |  |  |  |  |  |  |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of shares issued and outstanding of Galileo |  |  |  |  |  |  |  |  | 65.00% |  |

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