CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS ) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net Income (Loss) Attributable to U.S. Global Investors, Inc.	$ 31,961	$ (4,684)
Other Comprehensive Income (Loss), Net of Tax:
Unrealized gains on available-for-sale securities arising during period	7,496	0
Less: reclassification adjustment for gains included in net income	(932)	0
Net change from available-for-sale securities, net of tax	6,564	0
Foreign currency translation adjustment	27	88
Reclassification of foreign currency losses to net loss	0	228
Other Comprehensive Income	6,591	316
Comprehensive Income (Loss)	38,552	(4,368)
Less: Comprehensive Income Attributable to Non-Controlling Interest	0	114
Comprehensive Income (Loss) Attributable to U.S. Global Investors, Inc.	$ 38,552	$ (4,482)