Defiance Daily Target 2X Short SpaceX ETF SPCX Price Appreciation Risk [Member] Indirect Investment in SPCX Risk [Member] SPCX Good Performance Risk [Member] Industry Recognition and Analyst Coverage Risk [Member] Single Issuer Risk [Member] Compounding and Market Volatility Risk [Member] Daily Correlation/Tracking Risk [Member] Short Sale Exposure Risk [Member] Leverage Risk [Member] Derivatives Risk [Member] Swap Agreements [Member] Options Contracts [Member] Counterparty Risk [Member] Recent IPO and Derivatives Capacity Constraints Risk [Member] Intra-Day Investment Risk [Member] Fixed Income Securities Risk [Member] Rebalancing 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] Liquidity Risk [Member] High Portfolio Turnover Risk [Member] Tracking Error Risk [Member] Liquidity Risks [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 SpaceX ETF SPCX Risks [Member] SPCX Trading Risk [Member] SPCX Performance Risk [Member] Commercial Space Industry Risks [Member] Satellite Communications Industry Risks [Member] Artificial Intelligence Risk [Member] Business and Operational Risks [Member] Regulatory and Legal Risks [Member] Concentration Risks [Member] Elon Musk's Influence on SpaceX Risk [Member] Newly Public Company Risks [Member] Defiance Daily Target 2X Short SpaceX ETF [Member] Defiance Daily Target 2X Long SpaceX ETF [Member] Defiance Daily Target 2X Short SpaceX ETF Defiance Daily Target 2X Short SpaceX ETF [Member] Defiance Daily Target 2X Long SpaceX ETF Defiance Daily Target 2X Long SpaceX 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. 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. Recent IPO and Derivatives Capacity Constraints Risk. Counterparty Risk. Options Contracts. Swap Agreements. Derivatives Risk. Leverage Risk. Compounding and Market Volatility Risk. Single Issuer Risk. Newly Public Company Risks. Elon Musk's Influence on SpaceX Risk. Concentration Risks. Regulatory and Legal Risks. Business and Operational Risks. Artificial Intelligence Risk. Satellite Communications Industry Risks. Commercial Space Industry Risks. SPCX Performance Risk. SPCX Trading Risk. Indirect Investment in SPCX Risk. SPCX Risks. Short Sale Exposure Risk. Daily Correlation/Tracking Risk. SPCX Price Appreciation Risk. SPCX Good Performance Risk. Industry Recognition and Analyst Coverage Risk. Liquidity Risk.