Defiance Daily Target 2X Long CBRS ETF CBRS Risks [Member] Indirect Investment in CBRS Risk [Member] CBRS Trading Risk [Member] CBRS Performance Risk [Member] Newly Public Company and Stock Volatility Risks [Member] Software Industry Risk [Member] AI Technology Risk [Member] Semiconductor Company Risk [Member] Customer Concentration Risk [Member] Competition Risk [Member] Single Issuer Risk [Member] Compounding and Market Volatility Risk [Member] Daily Correlation/Tracking Risk [Member] Leverage Risk [Member] Derivatives Risk [Member] Swap Agreements [Member] Options Contracts [Member] Counterparty Risk [Member] Intra-Day Investment Risk [Member] Fixed Income Securities Risk [Member] Rebalancing 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 Risks [Member] Economic and Market Risk [Member] High Portfolio Turnover Risk [Member] Tracking Error Risk [Member] Liquidity Risk [Member] Money Market Instrument Risk [Member] New Fund Risk [Member] Trading Halt Risk [Member] Operational Risk [Member] U.S. Government and U.S. Agency Obligations Risk [Member] Tax Risk [Member] Defiance Daily Target 2x Short CBRS ETF CBRS Price Appreciation Risk [Member] CBRS Good Performance Risk [Member] Industry Recognition and Analyst Coverage Risk [Member] Short Sale Exposure Risk [Member] Defiance Daily Target 2X Long CBRS ETF [Member] Defiance Daily Target 2x Short CBRS ETF [Member] Defiance Daily Target 2X Long CBRS ETF Defiance Daily Target 2X Long CBRS ETF [Member] Defiance Daily Target 2x Short CBRS ETF Defiance Daily Target 2x Short CBRS ETF [Member] Tax Risk. U.S. Government and U.S. Agency Obligations Risk. Operational Risk. Trading Halt Risk. New Fund Risk. Money Market Instrument Risk. Liquidity Risk. Tracking Error 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. Rebalancing Risk. Fixed Income Securities Risk. Intra-Day Investment Risk. Counterparty Risk. Options Contracts. Swap Agreements. Derivatives Risk. Leverage Risk. Short Sale Exposure Risk. Daily Correlation/Tracking Risk. Compounding and Market Volatility Risk. Single Issuer Risk. Industry Recognition and Analyst Coverage Risk. CBRS Good Performance Risk. Indirect Investment in CBRS Risk. CBRS Price Appreciation Risk. Competition Risk. Semiconductor Company Risk. AI Technology Risk. Software Industry Risk. CBRS Performance Risk. CBRS Trading Risk. CBRS Risks. Newly Public Company and Stock Volatility Risks. Liquidity Risks.