v3.25.3
Shareholder Report, Holdings (Details)
Aug. 31, 2025
C000005559 | Georgia  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000005559 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000005559 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 8.40%
C000005559 | California  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000005559 | Virginia  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000005559 | Maryland  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000005559 | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000005559 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000005559 | District of Columbia  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000005559 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 39.70%
C000005559 | Life Care/Nursing Home Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 18.00%
C000005559 | Air & Sea Transportation  
Holdings [Line Items]  
Percent of Net Asset Value 13.30%
C000005559 | Housing Finance Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
C000005559 | Dedicated Tax Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000005559 | Educational Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000005559 | General Obligations - State  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000005559 | Genl Obligations - Local  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000005559 | Lease Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000005559 | Water & Sewer Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000005559 | Other 2  
Holdings [Line Items]  
Percent of Net Asset Value 18.00%
C000005560 | Georgia  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000005560 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000005560 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 8.40%
C000005560 | California  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000005560 | Virginia  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000005560 | Maryland  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000005560 | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000005560 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000005560 | District of Columbia  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000005560 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 39.70%
C000005560 | Life Care/Nursing Home Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 18.00%
C000005560 | Air & Sea Transportation  
Holdings [Line Items]  
Percent of Net Asset Value 13.30%
C000005560 | Housing Finance Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
C000005560 | Dedicated Tax Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000005560 | Educational Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000005560 | General Obligations - State  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000005560 | Genl Obligations - Local  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000005560 | Lease Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000005560 | Water & Sewer Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000005560 | Other 2  
Holdings [Line Items]  
Percent of Net Asset Value 18.00%
C000193190 | Georgia  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000193190 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000193190 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 8.40%
C000193190 | California  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000193190 | Virginia  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000193190 | Maryland  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000193190 | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000193190 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000193190 | District of Columbia  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000193190 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 39.70%
C000193190 | Life Care/Nursing Home Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 18.00%
C000193190 | Air & Sea Transportation  
Holdings [Line Items]  
Percent of Net Asset Value 13.30%
C000193190 | Housing Finance Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
C000193190 | Dedicated Tax Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000193190 | Educational Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000193190 | General Obligations - State  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000193190 | Genl Obligations - Local  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000193190 | Lease Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000193190 | Water & Sewer Revenue  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000193190 | Other 2  
Holdings [Line Items]  
Percent of Net Asset Value 18.00%