v3.25.4
Average Annual Total Returns
 12 Months Ended 60 Months Ended 90 Months Ended
Dec. 30, 2025
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
U.S. Global Go Gold and Precious Metal Miners Index (reflects no deduction for fees, expenses, or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] [1] U.S. Global Go Gold and Precious Metal Miners Index*(reflects no deduction for fees, expenses, or taxes)      
Average Annual Return, Percent [1]   14.93% 5.20% 9.45%
S&P 500 Total Return Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] S&P 500 Total Return Index (reflects no deduction for fees, expenses, or taxes)      
Average Annual Return, Percent   25.02% 14.53% 14.50%
U.S. Global GO GOLD and Precious Metal Miners ETF Class        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   13.66% 4.15% 8.11%
Performance Inception Date Jun. 27, 2017      
U.S. Global GO GOLD and Precious Metal Miners ETF Class | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions      
Average Annual Return, Percent   13.23% 3.57% 7.70%
U.S. Global GO GOLD and Precious Metal Miners ETF Class | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares      
Average Annual Return, Percent   8.62% 3.19% 6.50%
[1] Prior to December 30, 2025, the Fund tracked the performance of the U.S. Global Go Gold and Precious Metal Miners Index.