INVESTMENT MANAGEMENT AND OTHER FEES (Details) - Disaggregation of Revenue - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Other Operating Revenue	$ 0	$ 0	$ 444	$ 0
Total Operating Revenue	6,355	914	14,765	2,605
Investment Management Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	6,304	875	14,168	2,477
Administrative Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	51	39	153	128
U.S. Global Investors Funds [Member] | Administrative Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	51	39	153	128
U.S. Global Investors Funds [Member] | Investment and Advisory Services [Member] | Base Advisory Fee [Member[
Disaggregation of Revenue [Line Items]
Revenues	978	753	2,781	2,413
U.S. Global Investors Funds [Member] | Investment and Advisory Services [Member] | Investment Performance [Member]
Disaggregation of Revenue [Line Items]
Revenues	156	(79)	280	(391)
U.S. Global ETFs [Member] | Investment and Advisory Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 5,170	$ 201	$ 11,107	$ 455