Class I [Member] SUMMARY SECTION Stock Market Risk [Member] Value Investing Risk [Member] Emphasize Sector [Member] Varying Market Exposure [Member] Largesize Company Risks [Member] Options Risk [Member] Fixed Income Risk [Member] Turnover Risk [Member] Class N [Member] Emphasize Sector Risk [Member] Varying Market Exposure Risk [Member] Turnover Risks [Member] Class R [Member] Forester Value Fund Largesize Company Risk [Member] Portfolio Turnover Risk [Member] Class I Class N Class R S&P 500 Index