Shareholder Report, Average Annual Return (Details) |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
|
| C000091784 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Institutional | ||
| C000091785 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Investor | ||
| Without Sales Load [Member] | C000091784 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 12.03% | 7.54% | 7.33% |
| Without Sales Load [Member] | C000091785 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 11.75% | 7.28% | 7.06% |
| S&P 500® Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index | ||
| Average Annual Return, Percent | 20.38% | 12.79% | 15.37% |
| S&P 500® Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index | ||
| Average Annual Return, Percent | 20.38% | 12.79% | 15.37% |