v3.25.2
Investment Objectives and Goals - SIT U S GOVERNMENT SECURITIES FUND INC
Mar. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] SUMMARY INFORMATION SIT U.S. GOVERNMENT SECURITIES FUND
Objective [Heading] INVESTMENT OBJECTIVE
Objective, Primary [Text Block]
The Sit U.S. Government Securities Fund (the “Fund”) seeks high current income and safety of principal.