Shareholder Report, Average Annual Return (Details) |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2026 |
Jun. 30, 2026 |
|
| C000012489 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | DF Dent Premier Growth Fund | ||
| C000102025 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Investor | ||
| C000115949 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Investor | ||
| Without Sales Load [Member] | C000012489 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | (0.68%) | 2.73% | 12.32% |
| Without Sales Load [Member] | C000102025 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | (9.43%) | (1.48%) | 9.20% |
| Without Sales Load [Member] | C000195205 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | (9.33%) | (1.43%) | 9.27% |
| Without Sales Load [Member] | C000231957 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | (9.27%) | (1.36%) | 9.26% |
| Without Sales Load [Member] | C000115949 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 6.13% | 0.75% | 9.63% |
| Without Sales Load [Member] | C000195206 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 6.25% | 0.85% | 9.72% |
| Without Sales Load [Member] | C000256263 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 6.37% | 0.80% | 9.66% |
| 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 | 22.32% | 13.41% | 15.51% |
| Russell 2500 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2500<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 | 36.72% | 8.30% | 12.25% |
| Russell 2500 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2500<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 | 36.72% | 8.30% | 12.25% |
| Russell 2500 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2500<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 | 36.72% | 8.30% | 12.25% |
| Russell 2000 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2000<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 | 40.78% | 6.98% | 11.62% |
| Russell 2000 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2000<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 | 40.78% | 6.98% | 11.62% |
| Russell 2000 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2000<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 | 40.78% | 6.98% | 11.62% |
| Russell Midcap Growth Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell Midcap Growth<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 | 6.17% | 6.03% | 13.04% |
| Russell Midcap Growth Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell Midcap Growth<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 | 6.17% | 6.03% | 13.04% |
| Russell Midcap Growth Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell Midcap Growth<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 | 6.17% | 6.03% | 13.04% |
| Russell 2000 Growth Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2000<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> Growth Index | ||
| Average Annual Return, Percent | 38.74% | 5.57% | 11.97% |
| Russell 2000 Growth Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2000<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> Growth Index | ||
| Average Annual Return, Percent | 38.74% | 5.57% | 11.97% |
| Russell 2000 Growth Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2000<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> Growth Index | ||
| Average Annual Return, Percent | 38.74% | 5.57% | 11.97% |