AAMA Equity Fund AAMA Equity Fund Shares Market Risk Equity Securities Risk Management Risk Small-Cap and Mid-Cap Company Risk Value Stocks Risk Growth Stocks Risk Other Investment Company Risk Exchange-Traded Fund Risk Foreign Investing Risk Foreign Currency Risk Depositary Receipts Risk Preferred Securities Risk Convertible Securities Risk Real Estate Investment Trusts (REITs) Risk Focus Risk Money Market Fund Risk U.S. Government Securities Risk Redemption Risk Cybersecurity Risk Inflation Risk Market Disruption Risk S&P 500 Index (reflects no deductions for fees, expenses or taxes) S&P 500 Equal Weight Index (reflects no deductions for fees, expenses or taxes) AAMA Income Fund AAMA Income Fund Shares Fixed Income Risk Interest Rate Risk [Member] Credit Risk [Member] Prepayment and Extension Risk Floating and Variable Rate Securities Risk Below Investment Grade Bond Risk Zero Coupon Bonds Risk Municipal Securities Risk Inflation-Linked Securities Risk Mortgage-Related and Mortgage-Backed Securities Risk Convertible Bond Risk Foreign Investments Risk Sovereign Debt Risk Emerging Markets Risk Bloomberg Aggregate Bond Index (reflects no deductions for fees, expenses or taxes) Bloomberg 1-5 Year U.S. Government/Credit Index (reflects no deductions for fees, expenses or taxes)