S000004423 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | ||
|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
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| Russell 3000 Index (reflects no deductions for fees, expenses or taxes) | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 23.81% | 13.86% | 12.55% | ||
| Russell Microcap Index (reflects no deductions for fees, expenses or taxes) | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 13.70% | 6.97% | 6.77% | ||
| Class N | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 17.55% | 16.73% | 7.12% | ||
| Class N | After Taxes on Distributions | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 16.55% | 13.92% | 5.35% | |
| Class N | After Taxes on Distributions and Sales | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 10.53% | 12.71% | 5.15% | |
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