Defiance Korea AI ETF South Korean Investment Risk [Member] Semiconductor Companies Risk [Member] AI-Related Industry Risks [Member] Foreign Securities Risk [Member] Currency Risk [Member] Developed Markets Risk [Member] Depositary Receipt Risk [Member] Equity Market Risk [Member] Focused Portfolio Risk [Member] Index Strategy Risk [Member] Data Risk [Member] Passive Investment Risk [Member] Tracking Error Risk [Member] Concentration Risk [Member] Management Risk [Member] Risks Related to Changes in Government Policies and Institutions [Member] Derivatives Risk [Member] Swap Agreements [Member] Equity Total Return Swaps [Member] Counterparty Risk [Member] ETF Risks [Member] Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] Cash Redemption Risk [Member] Costs of Buying or Selling Shares [Member] Shares May Trade at Prices Other Than NAV [Member] Trading [Member] Liquidity Risk [Member] Economic and Market Risk [Member] High Portfolio Turnover Risk [Member] Liquidity Risks [Member] Money Market Instrument Risk [Member] New Fund Risk [Member] Operational Risk [Member] Tax Risk [Member] Underlying Index Risk [Member] Defiance Korea Semiconductor ETF Defiance China Semiconductor ETF Chinese Investment Risk [Member] Defiance Korea AI ETF [Member] Defiance Korea Semiconductor ETF [Member] Defiance China Semiconductor ETF [Member] Defiance Korea AI ETF Defiance Korea AI ETF Defiance Korea Semiconductor ETF Defiance Korea Semiconductor ETF Defiance China Semiconductor ETF Defiance China Semiconductor ETF Underlying Index Risk. Tax Risk. Operational Risk. New Fund Risk. Money Market Instrument Risk. Liquidity Risk. Liquidity Risks. High Portfolio Turnover Risk. Economic and Market Risk. Trading. Shares May Trade at Prices Other Than NAV. Costs of Buying or Selling Shares. Cash Redemption Risk. Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. ETF Risks. Counterparty Risk. Equity Total Return Swaps. Swap Agreements. Derivatives Risk. Risks Related to Changes in Government Policies and Institutions. Management Risk. Concentration Risk. Tracking Error Risk. Passive Investment Risk. Data Risk. Index Strategy Risk. Focused Portfolio Risk. Equity Market Risk. Developed Markets Risk. Depositary Receipt Risk. Currency Risk. Foreign Securities Risk. Semiconductor Companies Risk. Chinese Investment Risk. South Korean Investment Risk. AI-Related Industry Risks.