S000016933 [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 Midcap Growth Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.66% | 6.65% | 12.49% |
| Class I | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 13.32% | 5.24% | 7.47% |
| Class II | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 13.10% | 4.98% | 7.20% |