S000004424 [Member] Average Annual Total Returns

12 Months Ended

60 Months Ended

120 Months Ended

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

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

14.92%

8.53%

6.08%

Class N | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

14.75%

7.07%

4.16%

Class N | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

8.95%

6.67%

4.45%

[1]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a potential tax benefit of realizing a capital loss upon the sale of Fund shares. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement plans.