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INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($)
 3 Months Ended 9 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Jun. 30, 2021
U.S. Global Investors Funds [Member]          
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]          
Aggregate Fees Waived and Expenses Borne $ 147,000 $ 153,000 $ 465 $ 554  
Administrative fee rate     0.05%    
U.S. Global ETFs [Member]          
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]          
Unitary Management Fee, Percentage of Average Net Assets     0.60%    
U.S. Global Jets UCITS ETF [Member]          
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]          
Unitary Management Fee, Percentage of Average Net Assets     0.65%    
Fund Clients [Member]          
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]          
Receivables, Net, Current 2,000,000   $ 2,000,000   $ 2,400,000
Fund Clients [Member] | U.S. Global Investors Funds [Member]          
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]          
Receivables, Net, Current 246,000   246,000   432,000
Fund Clients [Member] | U.S. Global ETFs [Member]          
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]          
Receivables, Net, Current $ 1,800,000   $ 1,800,000   $ 2,000,000
Equity Funds [Member] | U.S. Global Investors Funds [Member]          
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]          
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%