Defiance Leveraged Long MSTR ETF MSTR Risk [Member] Indirect Investment in MSTR Risk [Member] MSTR Trading Risk [Member] MSTR Performance Risk [Member] Software Industry Risks [Member] Bitcoin Risk [Member] Blockchain Risk [Member] Concentration Risk [Member] Software Industry Risk [Member] Derivatives Risks [Member] Swap Agreements [Member] Options Contracts [Member] Leverage Risk [Member] Counterparty Risk [Member] Compounding and Market Volatility Risk [Member] Economic and Market 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] High Portfolio Turnover Risk [Member] Management Risk [Member] Money Market Instrument Risk [Member] New Fund Risk [Member] Operational Risk [Member] Tax Risk [Member] U.S. Government and U.S. Agency Obligations Risk [Member] Defiance Leveraged Long + Income MSTR ETF Affiliated Fund Risk [Member] Leveraged ETF Risk [Member] Investment in Other Investment Companies Risk [Member] Newer Fund Risk [Member] Defiance Leveraged Long MSTR ETF [Member] Defiance Leveraged Long + Income MSTR ETF [Member] Defiance Leveraged Long MSTR ETF. Defiance Leveraged Long MSTR ETF. Defiance Leveraged Long + Income MSTR ETF. Defiance Leveraged Long + Income MSTR ETF. U.S. Government and U.S. Agency Obligations Risk. Tax Risk. Operational Risk. Newer Fund Risk. Money Market Instrument Risk. Management Risk. High Portfolio Turnover 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. Economic and Market Risk. Compounding and Market Volatility Risk. Counterparty Risk. Software Industry Risk. Concentration Risk. Leverage Risk. Options Contracts. Swap Agreements. Derivatives Risks. Investment in Other Investment Companies Risk. Leveraged ETF Risk. Affiliated Fund Risk. Blockchain Risk. Bitcoin Risk. MSTR Performance Risk. MSTR Trading Risk. Indirect Investment in MSTR Risk. MSTR Risk. Software Industry Risks. New Fund Risk.