AGF U.S. Market Neutral Anti-Beta Fund Single Factor Risk [Member] Anti-Beta Risk [Member] Market Neutral Style Risk [Member] Short Sale Risk [Member] Cash Transactions Risk [Member] Derivatives Risk [Member] ETF Risks [Member] Authorized Participants Concentration Risk [Member] Premium/Discount and Bid/Ask Risk [Member] Secondary Market Trading Risk [Member] Trading Halt Risk [Member] Equity Investing Risk [Member] Large-Capitalization Securities Risk [Member] Leverage Risk [Member] Liquidity Risk [Member] Market Risk [Member] Mid-Capitalization Securities Risk [Member] Portfolio Turnover Risk [Member] Portfolio Management Risk [Member] REIT Risk [Member] AGF U.S. Market Neutral Anti-Beta Fund [Member] S&P 500 Index (reflects no deduction for fees, expenses or taxes) Dow Jones U.S. Thematic Market Neutral Low Beta Index (reflects no deduction for fees, expenses or taxes) AGF U.S. Market Neutral Anti-Beta Fund AGF U.S. Market Neutral Anti-Beta Fund [Member] REIT Risk. Portfolio Management Risk. Portfolio Turnover Risk. Mid-Capitalization Securities Risk. Market Risk. Liquidity Risk. Leverage Risk. Large-Capitalization Securities Risk. Equity Investing Risk. Trading Halt Risk. Secondary Market Trading Risk. Premium/Discount and Bid/Ask Risk. Authorized Participants Concentration Risk. ETF Risks. Derivatives Risk. Cash Transactions Risk. Short Sale Risk. Market Neutral Style Risk. Anti-Beta Risk. Single Factor Risk. S&P 500 Index (reflects no deduction for fees, expenses or taxes) Dow Jones U.S. Thematic Market Neutral Low Beta Index (reflects no deduction for fees, expenses or taxes)