S000003468 [Member] Annual Fund Operating Expenses - Sit Minnesota Tax-Free Income Fund - Sit Minnesota Tax-Free Income Fund |
Mar. 31, 2026 |
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|---|---|---|---|---|
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.80% | |||
| Acquired Fund Fees and Expenses | 0.01% | [1] | ||
| Expenses (as a percentage of Assets) | 0.81% | |||
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