v3.26.3
S000003462 [Member] Investment Objectives and Goals - Sit Balanced Fund
Jun. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] FUND SUMMARIES SIT BALANCED FUND
Objective [Heading] INVESTMENT OBJECTIVE
Objective, Primary [Text Block]
The Sit Balanced Fund (the “Fund”) seeks long-term capital growth consistent with preservation of principal and seeks to provide shareholders with regular income.