Fitz-Gerald Must Have Dividend Portfolio(R) ETF Dividend and Income Risk [Member] Shareholder Yield Risk [Member] Equity Market Risk [Member] Thematic Investing Risk [Member] Market Capitalization Risk [Member] Large-Capitalization Investing [Member] Mid-Capitalization Investing [Member] Small-Capitalization Investing [Member] Sector Risk [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] Economic and Market Risk [Member] Inflation Risk [Member] Interest Rate Risk [Member] Management Risk [Member] Models and Data Risk [Member] NAV Decline Risk Due to Distributions [Member] Newer Fund Risk [Member] Operational Risk [Member] Fitz-Gerald Must Have Dividend Portfolio(R) ETF [Member] Fitz-Gerald Must Have Dividend Portfolio(R) ETF Fitz-Gerald Must Have Dividend Portfolio(R) ETF [Member] Operational Risk. Newer Fund Risk. NAV Decline Risk Due to Distributions. Models and Data Risk. Management Risk. Inflation Risk. Economic and Market 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. Sector Risk. Small-Capitalization Investing. Mid-Capitalization Investing. Large-Capitalization Investing. Market Capitalization Risk. Thematic Investing Risk. Equity Market Risk. Shareholder Yield Risk. Dividend and Income Risk.