S000048642 [Member] Average Annual Total Returns

12 Months Ended

60 Months Ended

120 Months Ended

Dec. 31, 2025

Dec. 31, 2025

Dec. 31, 2025

Russell 3000® Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

17.15%

13.15%

14.29%

Russell 2000® Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[2]

12.81%

6.09%

9.62%

Sit Small Cap Dividend Growth Fund - Class I

Prospectus [Line Items]

Average Annual Return, Percent

12.92%

9.07%

9.99%

Sit Small Cap Dividend Growth Fund - Class I | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

12.32%

8.16%

9.36%

Sit Small Cap Dividend Growth Fund - Class I | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

8.06%

7.01%

8.10%

Sit Small Cap Dividend Growth Fund - Class S

Prospectus [Line Items]

Average Annual Return, Percent

12.58%

8.78%

9.71%

[1]	A broad-based securities market index that represents the overall domestic equity markets.
[2]	A more narrowly-based index that reflects the market sectors in which the Fund invests.