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INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2020
U.S. Global Investors Funds [Member]      
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]      
Aggregate Fees Waived and Expenses Borne $ 216 $ 144  
Administrative fee rate 0.05%   0.05%
U.S. Global Investors Funds [Member] | Equity Funds [Member]      
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]      
Base percentage adjustment, fund performance not within benchmark index 0.25%    
Minimum performance to designated benchmark over prior rolling twelve months, percent 5.00%    
U.S. Global ETFs [Member]      
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]      
Unitary Management Fee, Percentage of Average Net Assets 0.60%    
Fund Clients [Member]      
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]      
Receivables, Net, Current $ 1,200   $ 869
Fund Clients [Member] | U.S. Global Investors Funds [Member]      
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]      
Receivables, Net, Current 328   187
Fund Clients [Member] | U.S. Global ETFs [Member]      
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]      
Receivables, Net, Current $ 877   $ 682