DISCONTINUED OPERATIONS (Details) - Disposal Groups, Including Discontinued Operations - Galileo [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Assets
Cash and cash equivalents	$ 0		$ 0		$ 1,482
Accounts and other receivables	0		0		200
Prepaid expenses	0		0		52
Net Property and Equipment	0		0		38
Other assets, non-current	0		0		8
Total assets held related to discontinued operations	0		0		1,780
Liabilities
Accounts payable	0		0		135
Accrued compensation and related costs	0		0		84
Other accrued expenses	0		0		262
Total liabilities held related to discontinued operations	0		0		$ 481
Revenues
Revenues	50	$ 114	235	$ 1,299
Expenses
Employee compensation and benefits	23	94	77	395
General and administrative	125	229	508	810
Depreciation and amortization	1	2	6	7
	149	325	591	1,212
Other Income (Loss)
Investment income (loss)	21	(7)	24	23
Other income (loss)	(7)	33	(6)	39
	14	26	18	62
Income (loss) from discontinued operations of investment management services in Canada before income taxes	(85)	(185)	(338)	149
Tax benefit	0	(11)	0	0
Income (loss) from discontinued operations of investment management services in Canada	(85)	(174)	(338)	149
Less: net income (loss) attributable to non-controlling interest from discontinued operations	(30)	(61)	(118)	52
Net income (loss) attributable to U.S. Global Investors, Inc. from discontinued operations of investment management services in Canada	(55)	(113)	(220)	97
Investment Advisory Services [Member]
Revenues
Revenues	$ 50	$ 114	$ 235	$ 1,299