S000039473 [Member] Expense Example - Sit Quality Income Fund |
Mar. 31, 2026
USD ($)
|
|---|---|
| Sit Quality Income Fund - Class S | |
| 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 |
| Sit Quality Income Fund - Class Y | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 5,740 |
| Expense Example, with Redemption, 3 Years | 17,993 |
| Expense Example, with Redemption, 5 Years | 31,355 |
| Expense Example, with Redemption, 10 Years | $ 70,292 |