v3.26.3
S000023468 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended 207 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
MSCI World Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent [1] 21.09% 12.15% 12.17%  
Sit Global Dividend Growth Fund - Class I        
Prospectus [Line Items]        
Average Annual Return, Percent 16.68% 11.19% 10.99%  
Performance Inception Date       Sep. 30, 2008
Sit Global Dividend Growth Fund - Class I | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent 16.29% 10.83% 10.59%  
Performance Inception Date       Sep. 30, 2008
Sit Global Dividend Growth Fund - Class I | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent 10.14% 8.86% 9.00%  
Performance Inception Date       Sep. 30, 2008
Sit Global Dividend Growth Fund - Class S        
Prospectus [Line Items]        
Average Annual Return, Percent 16.39% 10.90% 10.72%  
Performance Inception Date       Sep. 30, 2008
[1]
A broad-based securities market index that represents the overall global equity markets.