Shareholder Report, Average Annual Return (Details) |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2026 |
Apr. 30, 2026 |
|
| C000086266 [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I | ||
| Average Annual Return, Percent | 14.26% | 9.84% | 11.79% |
| Russell 1000 Equal Weight Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 1000® Equal Weight Index | ||
| Average Annual Return, Percent | 29.29% | 7.41% | 10.84% |
| Russell 2000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 2000® Index | ||
| Average Annual Return, Percent | 44.41% | 5.75% | 10.98% |