Performance Management - Wireless Fund |
Jul. 31, 2026 |
|---|---|
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Performance History |
| Performance Narrative [Text Block] | The bar chart and performance table shown below provide some indication of the risks of investing in the Fund and the variability of its returns. The bar chart shows changes in the Fund’s performance from year to year. The performance table shows how the Fund's average annual total returns for 1 year, 5 years, and 10 years compare with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available by calling 1-800-590-0898. |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and performance table shown below provide some indication of the risks of investing in the Fund and the variability of its returns. The bar chart shows changes in the Fund’s performance from year to year. The performance table shows how the Fund's average annual total returns for 1 year, 5 years, and 10 years compare with those of a broad measure of market performance. |
| Bar Chart [Heading] | Annual Total Returns (calendar years ended 12/31) |
| Bar Chart Closing [Text Block] | For the period January 1, 2026 through June 30, 2026, the total return for the Fund was 23.43%.
Best Quarter (6/30/20) +24.15% Worst Quarter (6/30/22) -22.72% |
| Performance Table Heading | AVERAGE ANNUAL TOTAL RETURN FOR THE PERIODS ENDED 12/31/25 |
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest marginal individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. |
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred accounts, such as 401(k) plans or IRAs. |
| Performance Table Closing [Text Block] | After-tax returns are calculated using the historical highest marginal individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred accounts, such as 401(k) plans or IRAs. |
| Performance Availability Phone [Text] | 1-800-590-0898 |
| Wireless Fund Shares | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | total return for the Fund |
| Bar Chart, Year to Date Return | 23.43% |
| Bar Chart, Year to Date Return, Date | Jun. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | Best Quarter |
| Highest Quarterly Return | 24.15% |
| Highest Quarterly Return, Date | Jun. 30, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter |
| Lowest Quarterly Return | (22.72%) |
| Lowest Quarterly Return, Date | Jun. 30, 2022 |