Defiance Brazil Sovereign Debt ETF Fixed Income Securities Risk [Member] Brazil Sovereign Debt Risk [Member] Concentration Risk [Member] Counterparty Risk [Member] Credit Risk [Member] Derivatives Risk [Member] Foreign Securities Risk [Member] Currency Risk [Member] Emerging Markets Risks [Member] Emerging Markets Bonds Risks [Member] Interest Rate Risk [Member] Focused Portfolio Risk [Member] Management 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 Yield Debt Securities (Junk Bond) Risk [Member] Liquidity Risks [Member] New Fund Risk [Member] Operational Risk [Member] Tax Risk [Member] Defiance Brazil Sovereign Debt ETF [Member] Defiance Brazil Sovereign Debt ETF. Defiance Brazil Sovereign Debt ETF. Tax Risk. High Yield Debt Securities (Junk Bond) Risk. Operational Risk. New Fund Risk. Liquidity Risk. Liquidity Risks. 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. Management Risk. Focused Portfolio Risk. Interest Rate Risk. Emerging Markets Bonds Risks. Emerging Markets Risks. Currency Risk. Foreign Securities Risk. Derivatives Risk. Credit Risk. Counterparty Risk. Concentration Risk. Brazil Sovereign Debt Risk. Fixed Income Securities Risk.