Defiance Daily Target 2X Long FLNC ETF FLNC Risks [Member] Indirect Investment in FLNC Risk [Member] FLNC Trading Risk [Member] FLNC Performance Risk [Member] FLNC Business Risks [Member] Technology Sector Risk [Member] Electrical Equipment Industry Risk [Member] Battery Market 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 Long KRMN ETF KRMN Risks [Member] Indirect Investment in KRMN Risk [Member] KRMN Trading Risk [Member] KRMN Performance Risk [Member] KRMN Business Risks [Member] Aerospace & Defense Industry Risks [Member] Newly Public Company Risks [Member] Delisting Risk [Member] Defiance Daily Target 2X Long MTSI ETF MTSI Risks [Member] Indirect Investment in MTSI Risk [Member] MTSI Trading Risk [Member] MTSI Performance Risk [Member] MTSI Business Risks [Member] Semiconductors Industry Risk [Member] Defiance Daily Target 2X Long PURR ETF PURR Risks [Member] Indirect Investment in PURR Risk [Member] PURR Trading Risk [Member] PURR Performance Risk [Member] PURR Business Risks [Member] Blockchain Related Company Risk [Member] Defiance Daily Target 2X Long DRAM ETF DRAM Risks [Member] Indirect Investment in DRAM Risk [Member] Management and New Fund Risk [Member] Equity Securities Risk [Member] Asia Risk [Member] Semiconductor and Memory Companies Risk [Member] Defiance Daily Target 2X Long FLNC ETF [Member] Defiance Daily Target 2X Long KRMN ETF [Member] Defiance Daily Target 2X Long MTSI ETF [Member] Defiance Daily Target 2X Long PURR ETF [Member] Defiance Daily Target 2X Long DRAM ETF [Member] Defiance Daily Target 2X Long FLNC ETF. Defiance Daily Target 2X Long FLNC ETF. Defiance Daily Target 2X Long KRMN ETF. Defiance Daily Target 2X Long KRMN ETF. Defiance Daily Target 2X Long MTSI ETF. Defiance Daily Target 2X Long MTSI ETF. Defiance Daily Target 2X Long PURR ETF. Defiance Daily Target 2X Long PURR ETF. Defiance Daily Target 2X Long DRAM ETF. Defiance Daily Target 2X Long DRAM 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. Compounding and Market Volatility Risk. Single Issuer Risk. Technology Sector Risk. Semiconductor and Memory Companies Risk. Asia Risk. Equity Securities Risk. Management and New Fund Risk. Indirect Investment in DRAM Risk. DRAM Risks. Newly Public Company Risks. Blockchain Related Company Risk. Electrical Equipment Industry Risk. PURR Performance Risk. PURR Trading Risk. Indirect Investment in PURR Risk. PURR Risks. Semiconductors Industry Risk. MTSI Performance Risk. MTSI Trading Risk. Indirect Investment in MTSI Risk. MTSI Risks. Delisting Risk. KRMN Performance Risk. KRMN Trading Risk. Indirect Investment in KRMN Risk. KRMN Risks. Battery Market Competition Risk. FLNC Performance Risk. FLNC Trading Risk. Indirect Investment in FLNC Risk. FLNC Risks. FLNC Business Risks. Daily Correlation/Tracking Risk. Liquidity Risks. KRMN Business Risks. Aerospace & Defense Industry Risks. MTSI Business Risks. PURR Business Risks.