Defiance Daily Target 2X Long NANO ETF NANO Risks [Member] Indirect Investment in NANO Risk [Member] NANO Trading Risk [Member] NANO Performance Risk [Member] NANO Market and Listing Risks [Member] Information Technology Sector Risk [Member] Semiconductors & Semiconductor Equipment Industry Risk [Member] Newly Public Company Risks [Member] Single Issuer Risk [Member] Compounding and Market Volatility Risk [Member] Daily Correlation/Tracking Risk [Member] Aggressive Investment Technique Risk [Member] Leverage Risk [Member] Derivatives Risk [Member] Swap Agreements [Member] Options Contracts [Member] Counterparty Risk [Member] Recent Public Listing and Derivatives Capacity Constraints Risk [Member] Concentration 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 Risk [Member] Economic and Market Risk [Member] High Portfolio Turnover Risk [Member] Tracking Error Risk [Member] Liquidity Risks [Member] Management 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 NANO ETF [Member] Defiance Daily Target 2X Long NANO ETF Defiance Daily Target 2X Long NANO ETF Tax Risk. U.S. Government and U.S. Agency Obligations Risk. Operational Risk. Trading Halt Risk. New Fund Risk. Money Market Instrument Risk. Management 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. Concentration Risk. Recent Public Listing and Derivatives Capacity Constraints Risk. Counterparty Risk. Options Contracts. Swap Agreements. Derivatives Risk. Leverage Risk. Aggressive Investment Technique Risk. Daily Correlation/Tracking Risk. Compounding and Market Volatility Risk. Single Issuer Risk. Newly Public Company Risks. Semiconductors & Semiconductor Equipment Industry Risk. Information Technology Sector Risk. NANO Market and Listing Risks. NANO Performance Risk. NANO Trading Risk. Indirect Investment in NANO Risk. NANO Risks. Liquidity Risks.