Average Annual Total Returns

12 Months Ended

60 Months Ended

120 Months Ended

131 Months Ended

266 Months Ended

Mar. 31, 2025

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

Prospectus [Line Items]

Average Annual Return, Percent

S&P Municipal Bond Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

1.90%

1.20%

2.34%

S&P Municipal Bond Short Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[2]

2.62%

1.32%

1.39%

Lipper Short Municipal Debt Funds Classification Average (reflects no deduction for taxes or sales loads)

Prospectus [Line Items]

Average Annual Return, Percent

^[3]

2.86%

1.20%

1.10%

Class A

Prospectus [Line Items]

Average Annual Return, Percent

0.01%

0.38%

0.79%

Performance Inception Date

Oct. 25, 2002

Class A | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

0.00%

0.38%

0.79%

Performance Inception Date

Oct. 25, 2002

Class A | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

1.10%

0.65%

0.91%

Performance Inception Date

Oct. 25, 2002

Class C

Prospectus [Line Items]

Average Annual Return, Percent

1.74%

0.08%

0.44%

Performance Inception Date

Feb. 10, 2014

Class I

Prospectus [Line Items]

Average Annual Return, Percent

2.85%

1.11%

1.25%

Performance Inception Date

Oct. 25, 2002

[1]	An index designed to measure the performance of the tax-exempt U.S. municipal bond market.
[2]	An index containing bonds in the S&P Municipal Bond Index with maturities between 6 months and 4 years.
[3]	Represents the average annualized total return for all reporting funds in the Lipper Short Municipal Debt Funds Classification.