S000003468 [Member] Expense Example - Sit Minnesota Tax-Free Income Fund - Sit Minnesota Tax-Free Income Fund |
Mar. 31, 2026
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 83 |
| Expense Example, with Redemption, 3 Years | 260 |
| Expense Example, with Redemption, 5 Years | 451 |
| Expense Example, with Redemption, 10 Years | $ 1,005 |