Defiance Daily Target 2X Long LWLG ETF LWLG Risks [Member] Indirect Investment in LWLG Risk [Member] LWLG Trading Risk [Member] LWLG Performance Risk [Member] LWLG Operational and Regulatory Risk [Member] LWLG Operating Loss Risk [Member] Technology Sector Risk [Member] Electronic Equipment, Instruments and Components Industry Risk [Member] Cybersecurity and Technology System Risks [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 Long LWLG ETF [Member] Defiance Daily Target 2X Long LWLG ETF. Defiance Daily Target 2X Long LWLG ETF. 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. 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. Rebalancing Risk. Fixed Income Securities Risk. Intra-Day Investment Risk. Counterparty Risk. Options Contracts. Swap Agreements. Derivatives Risk. Leverage Risk. Daily Correlation/Tracking Risk. Compounding and Market Volatility Risk. Single Issuer Risk. Cybersecurity and Technology System Risks. Electronic Equipment, Instruments and Components Industry Risk. Technology Sector Risk. LWLG Operating Loss Risk. LWLG Operational and Regulatory Risk. LWLG Performance Risk. LWLG Trading Risk. Indirect Investment in LWLG Risk. LWLG Risks. Liquidity Risks.