Fees and Expenses - SIT U S GOVERNMENT SECURITIES FUND INC |
Mar. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Expense Heading [Optional Text] | FEES AND EXPENSES OF THE FUND |
| Expense Narrative [Text Block] | This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables or the examples below.
|
| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) |
| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |
| Expense Example [Heading] | Example |
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in Class S shares of the Fund and $1,000,000 in Class Y shares of the Fund for the time periods indicated, that your investment has a 5% return each year, that the Fund’s operating expenses remain the same, and that you redeem all of your shares at the end of those periods. Although your actual costs and returns may be higher or lower, based on these assumptions your costs would be:
|
| Portfolio Turnover [Heading] | PORTFOLIO TURNOVER |
| Portfolio Turnover [Text Block] | The Fund pays transactions costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 25.55% of the average value of the portfolio.
|
| Portfolio Turnover, Rate | 25.55% |