v3.25.1
Expense Example
Apr. 30, 2025
USD ($)
Gabelli Growth Innovators ETF | Gabelli Growth Innovators ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 0
Expense Example, with Redemption, 3 Years 196
Expense Example, with Redemption, 5 Years 410
Expense Example, with Redemption, 10 Years 1,025
Gabelli Equity Income ETF | Gabelli Equity Income ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 0
Expense Example, with Redemption, 3 Years 197
Gabelli Small & Mid Cap ETF | Gabelli Small & Mid Cap ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 92
Expense Example, with Redemption, 3 Years 287
Gabelli Micro Cap ETF | Gabelli Micro Cap ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 92
Expense Example, with Redemption, 3 Years 287
Gabelli Love Our Planet & People ETF | Gabelli Love Our Planet & People ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 0
Expense Example, with Redemption, 3 Years 196
Expense Example, with Redemption, 5 Years 410
Expense Example, with Redemption, 10 Years 1,025
Gabelli Automation ETF | Gabelli Automation ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 0
Expense Example, with Redemption, 3 Years 196
Expense Example, with Redemption, 5 Years 410
Expense Example, with Redemption, 10 Years 1,025
Gabelli Commercial Aerospace and Defense ETF | Gabelli Commercial Aerospace and Defense ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 0
Expense Example, with Redemption, 3 Years 196
Expense Example, with Redemption, 5 Years 410
Expense Example, with Redemption, 10 Years 1,025
Gabelli Green Energy ETF | Gabelli Green Energy ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 92
Expense Example, with Redemption, 3 Years 287
Gabelli Financial Services Opportunities ETF | Gabelli Financial Services Opportunities ETF [Default Label]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 33
Expense Example, with Redemption, 3 Years 229
Expense Example, with Redemption, 5 Years 441
Expense Example, with Redemption, 10 Years $ 1,054