| Label | Element | Value |
|---|---|---|
| AlphaDroid Broad Markets Momentum ETF | Invesco QQQ Trust Series 1 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 66.70% |
| AlphaDroid Broad Markets Momentum ETF | State Street SPDR S&P 500 ETF Trust [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 33.10% |