EARNINGS PER SHARE (Details) - Schedule of Earnings Per Share, Basic and Diluted - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Schedule of Earnings Per Share, Basic and Diluted [Abstract]
Loss from Continuing Operations (in Dollars)	$ (4,464)	$ (3,292)
Loss from Discontinued Operations (in Dollars)	(338)	(147)
Less: Net Loss Attributable to Non-Controlling Interest from Discontinued Operations (in Dollars)	(118)	(51)
Net Loss Attributable from Discontinued Operations to U.S. Global Investors, Inc. (in Dollars)	(220)	(96)
Net Loss Attributable to U.S. Global Investors, Inc. (in Dollars)	$ (4,684)	$ (3,388)
Weighted average number of outstanding shares
Basic (in Shares)	15,108,394	15,138,351
Employee stock options (in Shares)	0	0
Diluted (in Shares)	15,108,394	15,138,351
Basic Net Loss per Share
Loss from continuing operations	$ (0.30)	$ (0.22)
Loss from discontinued operations	(0.01)	0
Net loss	(0.31)	(0.22)
Diluted Net Loss per Share
Loss from continuing operations	(0.30)	(0.22)
Loss from discontinued operations	(0.01)	0
Net loss	$ (0.31)	$ (0.22)