Defiance KSM Israel 120 ETF Israeli Issuer Investing Risk [Member] Equity Market Risk [Member] Foreign Securities Risk [Member] Developed Markets Risk [Member] Currency Risk [Member] Depositary Receipt Risk [Member] Concentration Risk [Member] Sector Risk [Member] Financial Services Sector 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] Market Capitalization Risks [Member] Large-Capitalization Investing [Member] Mid-Capitalization Investing [Member] Small-Capitalization Investing [Member] Micro-Capitalization Investing [Member] New Fund Risk [Member] Operational Risk [Member] Passive Investment Risk [Member] Third Party Data Risk [Member] Tracking Error Risk [Member] Underlying Index Risk [Member] Defiance CoinDesk 5 Equal Weight ETF Crypto Asset Market Volatility Risk [Member] Crypto Assets Risk [Member] Bitcoin (BTC) Risk [Member] Ethereum (ETH) Risk [Member] Binance Coin (BNB) Risk [Member] Ripple (XRP) Risk [Member] Solana (SOL) Risk [Member] Crypto Asset ETF and ETP Risk [Member] Derivatives Risk [Member] Swap Agreements Risk [Member] Options Contracts Risk [Member] Futures Contracts Risk - Generally [Member] Futures Contracts Risk - Crypto Assets [Member] Counterparty Risk [Member] Cayman Subsidiary Risk [Member] Commodity-Linked Derivatives Tax Risk [Member] Commodity Pool Regulatory Risk [Member] Cash Redemption Risk [Member] Liquidity Risk [Member] Reverse Repurchase Agreements Risk [Member] U.S. Government and U.S. Agency Obligations Risk [Member] Defiance KSM Israel 120 ETF [Member] Defiance CoinDesk 5 Equal Weight ETF [Member] Defiance CoinDesk 5 Equal Weight ETF. Defiance CoinDesk 5 Equal Weight ETF [Member] Defiance KSM Israel 120 ETF. Defiance KSM Israel 120 ETF [Member] Reverse Repurchase Agreements Risk. Underlying Index Risk. Tracking Error Risk. Third Party Data Risk. Passive Investment Risk. Operational Risk. New Fund Risk. Trading. Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. ETF Risks. Economic and Market Risk. Commodity Pool Regulatory Risk. Commodity-Linked Derivatives Tax Risk. Cayman Subsidiary Risk. Concentration Risk. Counterparty Risk. Futures Contracts Risk - Crypto Assets Futures Contracts Risk - Generally. Options Contracts Risk. Swap Agreements Risk. Derivatives Risk. Crypto Asset ETF and ETP Risk. Solana (SOL) Risk. Ripple (XRP) Risk. Binance Coin (BNB) Risk. Ethereum (ETH) Risk. Bitcoin (BTC) Risk. Crypto Assets Risk. Crypto Asset Market Volatility Risk. Mid-Capitalization Investing. Large-Capitalization Investing. Financial Services Sector Risk. Sector Risk. Depositary Receipt Risk. Currency Risk. Developed Markets Risk. Foreign Securities Risk. Equity Market Risk. Israeli Issuer Investing Risk. Costs of Buying or Selling Shares. Shares May Trade at Prices Other Than NAV. Market Capitalization Risks. Small-Capitalization Investing. Micro-Capitalization Investing. Cash Redemption Risk. Liquidity Risk. U.S. Government and U.S. Agency Obligations Risk.