S000039680 [Member] Average Annual Total Returns

12 Months Ended

60 Months Ended

120 Months Ended

131 Months Ended

143 Months Ended

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

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 Short Duration Municipal Yield Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[2]

4.25%

2.56%

3.36%

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

Prospectus [Line Items]

Average Annual Return, Percent

^[3]

5.20%

1.30%

3.02%

Prospectus [Line Items]

Average Annual Return, Percent

4.37%

1.51%

2.90%

Performance Inception Date

Feb. 01, 2013

Class A | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

4.19%

1.42%

2.84%

Performance Inception Date

Feb. 01, 2013

Class A | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

4.29%

1.91%

3.00%

Performance Inception Date

Feb. 01, 2013

Prospectus [Line Items]

Average Annual Return, Percent

7.23%

2.22%

3.36%

Performance Inception Date

Feb. 01, 2013

Prospectus [Line Items]

Average Annual Return, Percent

6.18%

1.21%

2.51%

Performance Inception Date

Feb. 10, 2014

[1]	An index designed to measure the performance of the tax-exempt U.S. municipal bond market.
[2]	An index that consists of bonds maturing in 1 to 12 years and is structured so that 70% of the market value of the index consists of bonds that are either not rated or are rated below investment grade, 20% are rated BBB/Baa, and 10% are rated single A.
[3]	Represents the average annualized total return for all reporting funds in the Lipper High Yield Municipal Debt Funds Classification.