VistaShares Space Supercycle ETF Space Investing Risks [Member] Equity Market Risk [Member] Economic and Market Risk [Member] Concentration Risk [Member] Aerospace & Defense Industry Risk [Member] Foreign Securities Risk [Member] Currency Exchange Rate Risk [Member] Depositary Receipt Risk [Member] Developed Markets Risk [Member] Emerging Markets Risk [Member] Index-Linked Strategy Risk [Member] Models and Data Risk [Member] Active Management Risk [Member] Tracking Error Risk [Member] Unrelated Business Risk [Member] Market Capitalization Risk [Member] Large-Capitalization Investing [Member] Mid-Capitalization Investing [Member] Small-Capitalization Investing [Member] ETF Risks [Member] Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] Costs of Buying or Selling Shares [Member] Shares May Trade at Prices Other Than NAV [Member] Trading [Member] IPO Risk [Member] New Fund Risk [Member] Newer Sub-Adviser Risk [Member] Operational Risk [Member] VistaShares Robotics Supercycle ETF Robotics & Automation Investing Risks [Member] Machinery Industry Risk [Member] VistaShares Defense Supercycle ETF Defense Investing Risks [Member] VistaShares Space Supercycle ETF [Member] VistaShares Robotics Supercycle ETF [Member] VistaShares Defense Supercycle ETF [Member] VistaShares Space Supercycle ETF. VistaShares Space Supercycle ETF. VistaShares Robotics Supercycle ETF. VistaShares Robotics Supercycle ETF. VistaShares Defense Supercycle ETF. VistaShares Defense Supercycle ETF. Operational Risk. Newer Sub-Adviser Risk. New Fund Risk. IPO Risk. Trading. Shares May Trade at Prices Other Than NAV. Costs of Buying or Selling Shares. Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. ETF Risks. Small-Capitalization Investing. Mid-Capitalization Investing. Large-Capitalization Investing. Market Capitalization Risk. Unrelated Business Risk. Tracking Error Risk. Active Management Risk. Models and Data Risk. Index-Linked Strategy Risk. Emerging Markets Risk. Developed Markets Risk. Depositary Receipt Risk. Currency Exchange Rate Risk. Foreign Securities Risk. Aerospace & Defense Industry Risk. Concentration Risk. Defense Investing Risks. Economic and Market Risk. Equity Market Risk. Machinery Industry Risk. Robotics & Automation Investing Risks. Space Investing Risks.