INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	$ 1,351	$ 1,604	$ 4,713	$ 5,064
Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables	548		548
Galileo [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	246	285	752	887
Performance Fees	0	0	464	0
Galileo [Member] | Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables	188		188
U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	$ 1,100	1,200	$ 3,400	3,800
Base percentage adjustment, fund performance not within benchmark index	0.25%		0.25%
Minimum performance to designated benchmark over prior rolling twelve months, percent	5.00%		5.00%
Increase (decrease) in base advisory fees realized	$ (138)	(16)	$ (445)	14
Aggregate Fees Waived and Expenses Borne	148	218	$ 482	764
U.S. Global Investors Funds [Member] | Investor Class Shares [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Administrative fee rate			0.05%
U.S. Global Investors Funds [Member] | Institutional Class Shares [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Administrative fee rate			0.04%
U.S. Global Investors Funds [Member] | Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables	303		$ 303
U.S. Global ETFs [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	165	98	$ 534	239
Unitary Management Fee, Percentage of Average Net Assets			0.60%
U.S. Global ETFs [Member] | Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables	57		$ 57
Offshore Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	0	34	3	102
Performance Fees	$ 0	$ 0	$ 0	$ 0