Annual Fund Operating Expenses - SIT U S GOVERNMENT SECURITIES FUND INC |
Mar. 31, 2025 |
|---|---|
| Sit U.S. Government Securities Fund - Class S | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.80% |
| Expenses (as a percentage of Assets) | 0.80% |
| Sit U.S. Government Securities Fund - Class Y | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.55% |
| Expenses (as a percentage of Assets) | 0.55% |