EARNINGS PER SHARE (Details) - Schedule of Earnings Per Share, Basic and Diluted - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Schedule of Earnings Per Share, Basic and Diluted [Abstract]
Income (Loss) from Continuing Operations (in Dollars)	$ 31,961	$ (4,464)
Loss from Discontinued Operations (in Dollars)	0	(338)
Less: Net Loss Attributable to Non-Controlling Interest from Discontinued Operations (in Dollars)	0	(118)
Net Loss Attributable from Discontinued Operations to U.S. Global Investors, Inc. (in Dollars)	0	(220)
Net Income (Loss) Attributable to U.S. Global Investors, Inc. (in Dollars)	$ 31,961	$ (4,684)
Weighted average number of outstanding shares
Basic (in Shares)	15,067,044	15,108,394
Employee stock options (in Shares)	909	0
Diluted (in Shares)	15,067,953	15,108,394
Basic Net Income (Loss) per Share
Income (loss) from continuing operations	$ 2.12	$ (0.3)
Loss from discontinued operations	0	(0.01)
Net income (loss)	2.12	(0.31)
Diluted Net Income (Loss) per Share
Income (loss) from continuing operations	2.12	(0.3)
Loss from discontinued operations	0	(0.01)
Net income (loss)	$ 2.12	$ (0.31)