S000004423 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | ||
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| Russell 3000 Index (reflects no deductions for fees, expenses or taxes) | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.29% | ||
| Russell Microcap Index (reflects no deductions for fees, expenses or taxes) | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 22.98% | 7.32% | 9.58% | ||
| Class N | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 7.15% | 12.08% | 9.77% | ||
| Class N | After Taxes on Distributions | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 4.74% | 8.88% | 7.74% | |
| Class N | After Taxes on Distributions and Sales | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 5.99% | 8.76% | 7.37% | |
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