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INVESTMENT MANAGEMENT AND OTHER FEES (Details) - Disaggregation of Revenue - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 971	$ 1,417	$ 3,993	$ 4,900
Investment and Advisory Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	926	1,351	3,852	4,713
Investment and Advisory Services [Member] | U.S. Global ETFs [Member]
Disaggregation of Revenue [Line Items]
Revenues	137	165	456	534
Investment and Advisory Services [Member] | Offshore Clients [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	3
Administrative Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	45	66	141	187
Administrative Service [Member] | U.S. Global Investors Funds [Member]
Disaggregation of Revenue [Line Items]
Revenues	45	66	141	187
Investment Management Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	857	1,171	2,694	3,684
Investment Management Services - Canada [Member]
Disaggregation of Revenue [Line Items]
Revenues	114	246	1,299	1,216
Base Advisory Fees [Member] | Investment and Advisory Services [Member] | U.S. Global Investors Funds [Member]
Disaggregation of Revenue [Line Items]
Revenues	785	1,078	2,469	3,405
Investment Performance [Member] | Investment and Advisory Services [Member] | U.S. Global Investors Funds [Member]
Disaggregation of Revenue [Line Items]
Revenues	(110)	(138)	(372)	(445)
Investment Management Services - Canada [Member]
Disaggregation of Revenue [Line Items]
Revenues	114	246	1,299	1,216
Investment Management Services - Canada [Member] | Base Advisory Fees [Member] | Investment and Advisory Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	114	246	429	752
Investment Management Services - Canada [Member] | Investment Performance [Member] | Investment and Advisory Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 0	$ 870	$ 464

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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

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