C000007079C000007078NACC2 Index: Short Municipal Debt Funds AverageNACC2 Index: Short Municipal Debt Funds Average_17497NACC2 Index: Bloomberg Municipal Bond IndexNACC2 Index: Bloomberg Municipal Bond Index_174971 to 7 Days8 to 30 Days31 to 60 Days61 to 90 Days91 to 180 DaysOver 180 DaysOther LineNo Trading Symbol [Flag]AssetsNetInvestmentCompanyPortfolioTurnover