S000003462 [Member] Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Sit Balanced Fund | Sit Balanced Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 13.59% | 18.02% | 22.64% | (20.84%) | 17.15% | 20.74% | 20.69% | (2.73%) | 17.74% | 4.60% |