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FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | $ 4,917 | $ 6,261
Galileo [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Percentage of shares owned by Parent | 65.00% |
Investment Management Services [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | $ 3,459 | 4,837
Investment Management Services - Canada [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | 1,458 | 1,424
U.S. Global Investors Funds [Member] | Investment Management Services [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | 2,900 | 4,100
U.S. Global ETFs [Member] | Investment Management Services [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | 588 | 701
Galileo Funds [Member] | Investment Management Services - Canada [Member] |  |
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items] |  |
Net operating revenues | $ 1,500 | $ 1,400

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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 + Details
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