DISCONTINUED OPERATIONS (Details) - Disposal Groups, Including Discontinued Operations - Galileo [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Assets
Cash and cash equivalents	$ 0	$ 1,482
Accounts and other receivables	0	200
Prepaid expenses	0	52
Net property and equipment	0	38
Other assets, non-current	0	8
Total assets held related to discontinued operations	0	1,780
Liabilities
Accounts payable	0	135
Accrued compensation and related costs	0	84
Other accrued expenses	0	262
Total liabilities held related to discontinued operations	0	481
Revenues
Revenues	235	1,458
Expenses
Employee compensation and benefits	77	534
General and administrative	508	1,121
Depreciation and amortization	6	10
	591	1,665
Other Income (Loss)
Investment income (loss)	24	18
Other income	(6)	42
	18	60
Loss from Discontinued Operations	(338)	(147)
Tax benefit	0	0
Income (loss) from discontinued operations of investment management services in Canada before income taxes	(338)	(147)
Less: net income (loss) attributable to non-controlling interest from discontinued operations	(118)	(51)
Net income (loss) attributable to U.S. Global Investors, Inc. from discontinued operations of investment management services in Canada	(220)	(96)
Investment and Advisory Services [Member]
Revenues
Revenues	$ 235	$ 1,458