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DISCONTINUED OPERATIONS (Details) - Disposal Groups, Including Discontinued Operations - Discontinued Operations [Member] - Galileo [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Revenues
Revenues	$ 0	$ 85	$ 0	$ 185
Expenses
Employee compensation and benefits	0	26	0	54
General and administrative	0	166	0	383
Depreciation and amortization	0	3	0	5
	0	195	0	442
Other Income (Loss)
Investment income	0	(7)	0	3
Other income	0	0	0	1
	0	(7)	0	4
Loss from discontinued operations of investment management services in Canada before income taxes	0	(117)	0	(253)
Tax expense (benefit)	0	0	0	0
Loss from discontinued operations of investment management services in Canada	0	(117)	0	(253)
Less: net loss attributable to non-controlling interest from discontinued operations	0	(40)	0	(88)
Net loss attributable to U.S. Global Investors, Inc. from discontinued operations of investment management services in Canada	$ 0	$ (77)	$ 0	$ (165)

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