Fixed Income SHares Series TE Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | ||
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| Bloomberg Municipal Bond Index (reflects no deductions for fees, expenses or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 4.25% | 0.80% | 2.34% | ||
| Bloomberg High Yield Municipal Bond Index (reflects no deductions for fees, expenses or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 2.46% | 2.18% | 4.35% | ||
| 50% Bloomberg 10 Year Municipal Bond Index/50% Bloomberg High Yield Municipal Bond Index (reflects no deductions for fees, expenses or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 4.18% | 1.63% | 3.46% | ||
| Series TE | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 5.53% | 2.56% | 3.80% | ||
| Series TE | After Taxes on Distributions | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 5.26% | 2.30% | 3.51% | |
| Series TE | After Taxes on Distributions and Sales | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 5.03% | 2.70% | 3.57% | |
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