INVESTMENT MANAGEMENT AND OTHER FEES (Details) - Disaggregation of Revenue - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 914	$ 857	$ 2,605	$ 2,694
Base Advisory Fee [Member[ | Investment and Advisory Services [Member] | U.S. Global Investors Funds [Member]
Disaggregation of Revenue [Line Items]
Revenues	753	785	2,413	2,469
Investment Performance [Member] | Investment and Advisory Services [Member] | U.S. Global Investors Funds [Member]
Disaggregation of Revenue [Line Items]
Revenues	(79)	(110)	(391)	(372)
Investment and Advisory Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	875	812	2,477	2,553
Investment and Advisory Services [Member] | U.S. Global ETFs [Member]
Disaggregation of Revenue [Line Items]
Revenues	201	137	455	456
Administrative Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	39	45	128	141
Administrative Service [Member] | U.S. Global Investors Funds [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 39	$ 45	$ 128	$ 141