v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
C000029387 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000029387 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000029387 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
C000029387 | California  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
C000029387 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000029387 | Florida  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000029387 | New Jersey  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000029387 | Pennsylvania  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000029387 | Arizona  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000029387 | Massachusetts  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000029387 | Alabama  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000029387 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000029389 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000029389 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000029389 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
C000029389 | California  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
C000029389 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000029389 | Florida  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000029389 | New Jersey  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000029389 | Pennsylvania  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000029389 | Arizona  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000029389 | Massachusetts  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000029389 | Alabama  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000029389 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000253712 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000253712 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000253712 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
C000253712 | California  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
C000253712 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000253712 | Florida  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000253712 | New Jersey  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000253712 | Pennsylvania  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000253712 | Arizona  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000253712 | Massachusetts  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000253712 | Alabama  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000253712 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000122658 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000122658 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000122658 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
C000122658 | California  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
C000122658 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000122658 | Florida  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000122658 | New Jersey  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000122658 | Pennsylvania  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000122658 | Arizona  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000122658 | Massachusetts  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000122658 | Alabama  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000122658 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000184729 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000184729 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000184729 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
C000184729 | California  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
C000184729 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000184729 | Florida  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000184729 | New Jersey  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000184729 | Pennsylvania  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000184729 | Arizona  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000184729 | Massachusetts  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000184729 | Alabama  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000184729 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000029392 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000029392 | Illinois  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000029392 | New York  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
C000029392 | California  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
C000029392 | Texas  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000029392 | Florida  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000029392 | New Jersey  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000029392 | Pennsylvania  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000029392 | Arizona  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000029392 | Massachusetts  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000029392 | Alabama  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000029392 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000032942 | FR_575579ZS9  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000032942 | FR_575832GX2  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000032942 | FR_57582RLV6  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000032942 | FR_575579ZP5  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000032942 | FR_57584YNZ8  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000032942 | FR_57584YMG1  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000032942 | FR_57584YT90  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000032942 | FR_57584X4K4  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000032942 | FR_57584YPL7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032942 | FR_57584YLF4  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032942 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000032942 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 97.30%
C000032942 | LongFloating Rate Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000184731 | FR_575579ZS9  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000184731 | FR_575832GX2  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000184731 | FR_57582RLV6  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000184731 | FR_575579ZP5  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000184731 | FR_57584YNZ8  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000184731 | FR_57584YMG1  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000184731 | FR_57584YT90  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000184731 | FR_57584X4K4  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000184731 | FR_57584YPL7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000184731 | FR_57584YLF4  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000184731 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000184731 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 97.30%
C000184731 | LongFloating Rate Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000032947 | FR_575579ZS9  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000032947 | FR_575832GX2  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000032947 | FR_57582RLV6  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000032947 | FR_575579ZP5  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000032947 | FR_57584YNZ8  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000032947 | FR_57584YMG1  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000032947 | FR_57584YT90  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000032947 | FR_57584X4K4  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000032947 | FR_57584YPL7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032947 | FR_57584YLF4  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032947 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000032947 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 97.30%
C000032947 | LongFloating Rate Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000032951 | FR_59261AWX1  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000032951 | FR_73358WV84  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000032951 | FR_89602REN1  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000032951 | FR_542691JT8  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000032951 | FR_986082XD2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000032951 | FR_64990GJN3  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000032951 | FR_64972HU59  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000032951 | FR_898526EZ7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000032951 | FR_986082VR3  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000032951 | FR_896035CX8  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000032951 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 96.20%
C000032951 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000169175 | FR_59261AWX1  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000169175 | FR_73358WV84  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000169175 | FR_89602REN1  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000169175 | FR_542691JT8  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000169175 | FR_986082XD2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000169175 | FR_64990GJN3  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000169175 | FR_64972HU59  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000169175 | FR_898526EZ7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000169175 | FR_986082VR3  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000169175 | FR_896035CX8  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000169175 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 96.20%
C000169175 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000184732 | FR_59261AWX1  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000184732 | FR_73358WV84  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000184732 | FR_89602REN1  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000184732 | FR_542691JT8  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000184732 | FR_986082XD2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000184732 | FR_64990GJN3  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000184732 | FR_64972HU59  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000184732 | FR_898526EZ7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000184732 | FR_986082VR3  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000184732 | FR_896035CX8  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000184732 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 96.20%
C000184732 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000032956 | FR_59261AWX1  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000032956 | FR_73358WV84  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000032956 | FR_89602REN1  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000032956 | FR_542691JT8  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000032956 | FR_986082XD2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000032956 | FR_64990GJN3  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000032956 | FR_64972HU59  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000032956 | FR_898526EZ7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000032956 | FR_986082VR3  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000032956 | FR_896035CX8  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000032956 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 96.20%
C000032956 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000029377 | FR_13013JDB9  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000029377 | FR_74529JQG3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000029377 | FR_45750TAB9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000029377 | FR_74529JPX7  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000029377 | FR_13080SWH3  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029377 | FR_564538CT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029377 | FR_271843AB0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029377 | FR_64972GCN2  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029377 | FR_156792KD4  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029377 | FR_13048VXH6  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029377 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000029377 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 94.30%
C000029377 | LongFloating Rate Notes  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000029377 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000029379 | FR_13013JDB9  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000029379 | FR_74529JQG3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000029379 | FR_45750TAB9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000029379 | FR_74529JPX7  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000029379 | FR_13080SWH3  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029379 | FR_564538CT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029379 | FR_271843AB0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029379 | FR_64972GCN2  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029379 | FR_156792KD4  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029379 | FR_13048VXH6  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029379 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000029379 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 94.30%
C000029379 | LongFloating Rate Notes  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000029379 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000169172 | FR_13013JDB9  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000169172 | FR_74529JQG3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000169172 | FR_45750TAB9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000169172 | FR_74529JPX7  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000169172 | FR_13080SWH3  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000169172 | FR_564538CT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000169172 | FR_271843AB0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000169172 | FR_64972GCN2  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000169172 | FR_156792KD4  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000169172 | FR_13048VXH6  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000169172 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000169172 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 94.30%
C000169172 | LongFloating Rate Notes  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000169172 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000184727 | FR_13013JDB9  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000184727 | FR_74529JQG3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000184727 | FR_45750TAB9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000184727 | FR_74529JPX7  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000184727 | FR_13080SWH3  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000184727 | FR_564538CT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000184727 | FR_271843AB0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000184727 | FR_64972GCN2  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000184727 | FR_156792KD4  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000184727 | FR_13048VXH6  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000184727 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000184727 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 94.30%
C000184727 | LongFloating Rate Notes  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000184727 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000029380 | FR_13013JDB9  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000029380 | FR_74529JQG3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000029380 | FR_45750TAB9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000029380 | FR_74529JPX7  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000029380 | FR_13080SWH3  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029380 | FR_564538CT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029380 | FR_271843AB0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000029380 | FR_64972GCN2  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029380 | FR_156792KD4  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029380 | FR_13048VXH6  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000029380 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000029380 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 94.30%
C000029380 | LongFloating Rate Notes  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000029380 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000032969 | FR_64972GL85  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000032969 | FR_896035DH2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000032969 | FR_898526FF0  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000032969 | FR_650116HA7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000032969 | FR_64966QG79  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000032969 | FR_64971XX94  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000032969 | FR_733580S88  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000032969 | FR_896035CF7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032969 | FR_64972GF41  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032969 | FR_65000B7X0  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032969 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000032969 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 95.20%
C000032969 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000032971 | FR_64972GL85  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000032971 | FR_896035DH2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000032971 | FR_898526FF0  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000032971 | FR_650116HA7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000032971 | FR_64966QG79  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000032971 | FR_64971XX94  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000032971 | FR_733580S88  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000032971 | FR_896035CF7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032971 | FR_64972GF41  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032971 | FR_65000B7X0  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000032971 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000032971 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 95.20%
C000032971 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000122676 | FR_64972GL85  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000122676 | FR_896035DH2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000122676 | FR_898526FF0  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000122676 | FR_650116HA7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000122676 | FR_64966QG79  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000122676 | FR_64971XX94  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000122676 | FR_733580S88  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000122676 | FR_896035CF7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000122676 | FR_64972GF41  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000122676 | FR_65000B7X0  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000122676 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000122676 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 95.20%
C000122676 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000184733 | FR_64972GL85  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000184733 | FR_896035DH2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000184733 | FR_898526FF0  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000184733 | FR_650116HA7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000184733 | FR_64966QG79  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000184733 | FR_64971XX94  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000184733 | FR_733580S88  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000184733 | FR_896035CF7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000184733 | FR_64972GF41  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000184733 | FR_65000B7X0  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000184733 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000184733 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 95.20%
C000184733 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000106577 | FR_64972GL85  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000106577 | FR_896035DH2  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000106577 | FR_898526FF0  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000106577 | FR_650116HA7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000106577 | FR_64966QG79  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000106577 | FR_64971XX94  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000106577 | FR_733580S88  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000106577 | FR_896035CF7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000106577 | FR_64972GF41  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000106577 | FR_65000B7X0  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000106577 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000106577 | LongMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 95.20%
C000106577 | LongMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%