Aura AI Photonics ETF Equity Market Risk [Member] Optical and Photonic Companies Risk [Member] Sector and Industry Risk [Member] Semiconductors & Semiconductor Equipment Industry Risks [Member] Technology Hardware & Equipment Industry Risks [Member] Index Risk [Member] Passive Investment Risk [Member] Early-Stage and Pre-Revenue Company Risk [Member] Economic and Market Risk [Member] ETF Risks [Member] Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] Costs of Buying or Selling Shares [Member] Shares May Trade at Prices Other Than NAV [Member] Trading [Member] Cash Redemption Risk [Member] Market Capitalization Risk [Member] Large-Capitalization Investing [Member] Mid-Capitalization Investing [Member] Small-Capitalization Investing [Member] Micro-Capitalization Investing [Member] Early-Stage and Pre-Revenue Company Risks [Member] Non-U.S. and Emerging Markets Risk [Member] Third Party Data Risk [Member] New Fund Risk [Member] Operational Risk [Member] Tracking Error Risk [Member] Underlying Index Risk [Member] Unrelated Business Risk [Member] Aura AI Photonics ETF [Member] Aura AI Photonics ETF Aura AI Photonics ETF [Member] Unrelated Business Risk. Underlying Index Risk. Tracking Error Risk. Operational Risk. New Fund Risk. Third Party Data Risk. Non-U.S. and Emerging Markets Risk. Early-Stage and Pre-Revenue Company Risk. Micro-Capitalization Investing. Small-Capitalization Investing. Mid-Capitalization Investing. Large-Capitalization Investing. Market Capitalization Risk. Cash Redemption Risk. Trading. Shares May Trade at Prices Other Than NAV. Costs of Buying or Selling Shares. Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. ETF Risks. Economic and Market Risk. Passive Investment Risk. Index Risk. Technology Hardware & Equipment Industry Risks. Semiconductors & Semiconductor Equipment Industry Risks. Sector and Industry Risk. Optical and Photonic Companies Risk. Equity Market Risk. Early-Stage and Pre-Revenue Company Risks.