S000071703 [Member] Investment Objectives and Goals - BATS: Short Term Municipal Income Series |
Mar. 31, 2026 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | Fund OverviewKey Facts About BATS: Short Term Municipal Income Series |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The investment objective of the BATS: Short Term Municipal Income Series (formerly known as “BATS: Series V Portfolio”) (the “Fund”) is to seek as high a level of income exempt from federal income tax consistent with preservation of capital while seeking to minimize price volatility.
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