S000017007 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Russell 3000 Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.29% |
| Russell 2000 Growth Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 13.01% | 3.18% | 9.57% |
| Class I | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 9.23% | (0.17%) | 9.38% |
| Class II | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.97% | (0.42%) | 9.11% |