Defiance Daily Target 2X Long AMPG ETF AMPG Risks [Member] Indirect Investment in AMPG Risk [Member] AMPG Trading Risk [Member] AMPG Performance Risk [Member] Electronic Equipment, Instruments and Components Industry Risk [Member] Regulatory and Compliance 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] Liquiditys Risk [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 BRUN ETF BRUN Risks [Member] Indirect Investment in BRUN Risk [Member] BRUN Trading Risk [Member] BRUN Performance Risk [Member] IT Services Industry Risks [Member] Defiance Daily Target 2X Long FCEL ETF FCEL Risks [Member] Indirect Investment in FCEL Risk [Member] FCEL Trading Risk [Member] FCEL Performance Risk [Member] Electrical Equipment Industry Risk [Member] Defiance Daily Target 2X Long FISN ETF FISN Risks [Member] Indirect Investment in FISN Risk [Member] FISN Trading Risk [Member] FISN Performance Risk [Member] Independent Power and Renewable Electricity Producers Industry Risk [Member] Defiance Daily Target 2X Long FTNT ETF FTNT Risks [Member] Indirect Investment in FTNT Risk [Member] FTNT Trading Risk [Member] FTNT Performance Risk [Member] Software Industry Risks [Member] Defiance Daily Target 2X Long GRRR ETF GRRR Risks [Member] Indirect Investment in GRRR Risk [Member] GRRR Trading Risk [Member] GRRR Performance Risk [Member] Defiance Daily Target 2X Long LPTH ETF LPTH Risks [Member] Indirect Investment in LPTH Risk [Member] LPTH Trading Risk [Member] LPTH Performance Risk [Member] Defiance Daily Target 2X Long OPTX ETF OPTX Risks [Member] Indirect Investment in OPTX Risk [Member] OPTX Trading Risk [Member] OPTX Performance Risk [Member] Defiance Daily Target 2X Long ORBS ETF ORBS Risks [Member] Indirect Investment in ORBS Risk [Member] ORBS Trading Risk [Member] ORBS Performance Risk [Member] Broadline Retail Industry Risk [Member] Defiance Daily Target 2X Long QTEX ETF QTEX Risks [Member] Indirect Investment in QTEX Risk [Member] QTEX Trading Risk [Member] QTEX Performance Risk [Member] Health Care Equipment and Supplies Industry Risk [Member] Defiance Daily Target 2X Long AMPG ETF [Member] Defiance Daily Target 2X Long BRUN ETF [Member] Defiance Daily Target 2X Long FCEL ETF [Member] Defiance Daily Target 2X Long FISN ETF [Member] Defiance Daily Target 2X Long FTNT ETF [Member] Defiance Daily Target 2X Long GRRR ETF [Member] Defiance Daily Target 2X Long LPTH ETF [Member] Defiance Daily Target 2X Long OPTX ETF [Member] Defiance Daily Target 2X Long ORBS ETF [Member] Defiance Daily Target 2X Long QTEX ETF [Member] Defiance Daily Target 2X Long BRUN ETF. Defiance Daily Target 2X Long BRUN ETF. Defiance Daily Target 2X Long FCEL ETF. Defiance Daily Target 2X Long FCEL ETF. Defiance Daily Target 2X Long GRRR ETF. Defiance Daily Target 2X Long GRRR ETF. Defiance Daily Target 2X Long LPTH ETF. Defiance Daily Target 2X Long LPTH ETF. Defiance Daily Target 2X Long OPTX ETF. Defiance Daily Target 2X Long OPTX ETF. Defiance Daily Target 2X Long ORBS ETF. Defiance Daily Target 2X Long ORBS ETF. Defiance Daily Target 2X Long QTEX ETF. Defiance Daily Target 2X Long QTEX ETF. Defiance Daily Target 2X Long AMPG ETF. Defiance Daily Target 2X Long AMPG ETF. Defiance Daily Target 2X Long FISN ETF. Defiance Daily Target 2X Long FISN ETF. Defiance Daily Target 2X Long FTNT ETF. Defiance Daily Target 2X Long FTNT 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. Liquiditys 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. Indirect Investment in QTEX Risk. QTEX Risks. Broadline Retail Industry Risk. ORBS Performance Risk. ORBS Trading Risk. Indirect Investment in ORBS Risk. ORBS Risks. Regulatory and Compliance Risk. Electronic Equipment, Instruments and Components Industry Risk. OPTX Performance Risk. OPTX Trading Risk. Indirect Investment in OPTX Risk. OPTX Risks. LPTH Performance Risk. LPTH Trading Risk. Indirect Investment in LPTH Risk. LPTH Risks. Software Industry Risks. GRRR Performance Risk. GRRR Trading Risk. Indirect Investment in GRRR Risk. GRRR Risks. FTNT Performance Risk. FTNT Trading Risk. Indirect Investment in FTNT Risk. FTNT Risks. Independent Power and Renewable Electricity Producers Industry Risk. FISN Performance Risk. FISN Trading Risk. Indirect Investment in FISN Risk. FISN Risks. Electrical Equipment Industry Risk. FCEL Performance Risk. FCEL Trading Risk. Indirect Investment in FCEL Risk. FCEL Risks. IT Services Industry Risks. BRUN Performance Risk. BRUN Trading Risk. Indirect Investment in BRUN Risk. BRUN Risks. AMPG Performance Risk. AMPG Trading Risk. Indirect Investment in AMPG Risk. AMPG Risks. QTEX Trading Risk. QTEX Performance Risk. Health Care Equipment and Supplies Industry Risk.