S000016637 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg Municipal Bond Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 4.25% | 0.80% | 2.34% |
| Bloomberg Pennsylvania Municipal Bond Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 4.34% | 0.87% | 2.54% |
| Class A | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 0.04% | (0.45%) | 1.47% |
| Class A | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 0.04% | (0.45%) | 1.47% |
| Class A | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 1.17% | 0.23% | 1.78% |
| Class C | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 2.41% | (0.14%) | 1.36% |
| Class I | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 4.22% | 0.62% | 2.10% |