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FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) - Investment Management Services [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
U.S. Global Investors Funds [Member]
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items]
Net operating revenues	$ 1,000	$ 754	$ 2,000	$ 1,400
U.S. Global ETFs [Member]
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items]
Net operating revenues	$ 3,600	$ 133	$ 5,900	$ 254

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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.

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