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      id="ixv-142913">Dividend Growth Fund</rr:RiskReturnHeading>
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 Investment Objective(s)</rr:ObjectiveHeading>
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      id="ixv-361">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;The fund seeks dividend 
income and long-term capital growth primarily through investments in stocks.&lt;/p&gt;</rr:ObjectivePrimaryTextBlock>
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      id="ixv-364">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:bold; text-decoration:none;"&gt;This 
table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. 
You may also incur brokerage commissions and other charges when buying or selling shares of the fund, 
which are not reflected in the table or example below.&lt;/p&gt;</rr:ExpenseNarrativeTextBlock>
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      unitRef="usd">0</rr:MaximumAccountFee>
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      unitRef="usd">0</rr:MaximumAccountFee>
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      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
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      unitRef="usd">0</rr:MaximumAccountFee>
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      id="ixv-142922">Annual 
fund operating expenses (expenses that you pay each 
year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
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      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
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      unitRef="pure">0.0048</rr:ManagementFeesOverAssets>
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      id="ixv-142927"
      unitRef="pure">0.0048</rr:ManagementFeesOverAssets>
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      decimals="INF"
      id="ixv-142930"
      unitRef="pure">0.0025</rr:DistributionAndService12b1FeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142931"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142932"
      unitRef="pure">0.0016</rr:OtherExpensesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142933"
      unitRef="pure">0.0002</rr:OtherExpensesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142934"
      unitRef="pure">0.0016</rr:OtherExpensesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142935"
      unitRef="pure">0.0001</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142936"
      unitRef="pure">0.0064</rr:ExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142937"
      unitRef="pure">0.0050</rr:ExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142938"
      unitRef="pure">0.0089</rr:ExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142939"
      unitRef="pure">0.0049</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142940"
      unitRef="pure">0</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142941"
      unitRef="pure">0</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142942"
      unitRef="pure">0</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="_40_"
      unitRef="pure">-0.0049</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142944"
      unitRef="pure">0.0064</rr:NetExpensesOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142945"
      unitRef="pure">0.0050</rr:NetExpensesOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142946"
      unitRef="pure">0.0089</rr:NetExpensesOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="_44_"
      unitRef="pure">0.0000</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142948">Example</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142949">This example is 
intended to help you compare the cost of investing in the fund with the cost of investing in other mutual 
funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then 
redeem all of your shares at the end of those periods, that your investment has a 5% return each year, 
and that the fund&#x2019;s operating expenses remain the same. The example also assumes that any current expense 
limitation arrangement remains in place for the period noted in the previous table; therefore, the figures 
have been adjusted to reflect fee waivers or expense reimbursements only in the periods for which the 
expense limitation arrangement is expected to continue. Although your actual costs may be higher or lower, 
based on these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142950"
      unitRef="usd">65</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142951"
      unitRef="usd">205</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142952"
      unitRef="usd">357</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142953"
      unitRef="usd">798</rr:ExpenseExampleYear10>
    <rr:ExpenseExampleYear01
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142954"
      unitRef="usd">51</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142955"
      unitRef="usd">160</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142956"
      unitRef="usd">280</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142957"
      unitRef="usd">628</rr:ExpenseExampleYear10>
    <rr:ExpenseExampleYear01
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142958"
      unitRef="usd">91</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142959"
      unitRef="usd">284</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142960"
      unitRef="usd">493</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142961"
      unitRef="usd">1096</rr:ExpenseExampleYear10>
    <rr:ExpenseExampleYear01
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142962"
      unitRef="usd">0</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142963"
      unitRef="usd">0</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142964"
      unitRef="usd">0</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142965"
      unitRef="usd">0</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-908">&lt;p style="-sec-ix-redline:true;font-size:8.0pt; font-family:Arial; text-align:left; font-weight:bold; text-decoration:none;"&gt;Portfolio Turnover  The fund pays transaction 
costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A 
higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when 
the fund&#x2019;s shares are held in a taxable account. These costs, which are not reflected in annual fund 
operating expenses or in the example, affect the fund&#x2019;s performance. During the most recent fiscal 
year, the fund&#x2019;s portfolio turnover rate was 10.0% of the average value of its portfolio.&lt;/p&gt;</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverHeading
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142966">Portfolio Turnover</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverRate
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142967"
      unitRef="pure">0.100</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142968">Principal Investment Strategies</rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-912">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;The fund normally invests 
at least 65% of the fund&#x2019;s total assets in stocks, with an emphasis on stocks that have a strong track 
record of paying dividends or that are expected to increase their dividends over time. &lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;The adviser believes that 
a track record of dividend increases can be an excellent indicator of financial health and growth prospects, 
and that over the long term, income can contribute significantly to total return. Dividends can also 
help reduce the fund&#x2019;s volatility during periods of market turbulence and help offset losses when stock 
prices are falling. &lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;The adviser&#x2019;s research analysts look for stocks with sustainable, above-average 
growth in earnings and dividends. When appropriate, the portfolio manager may attempt to buy stocks when 
they are temporarily out of favor or undervalued by the market. Holdings tend to be in large- and mid-cap 
companies. &lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;At times, the fund may have a significant portion of its assets invested in the 
same economic sector. &lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;In selecting investments, the adviser generally favors companies that it believes 
possess one or more of the following:&lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; text-indent:-8.65pt; font-weight:normal; margin-left:8.65pt; font-style:normal;"&gt;&lt;span style="font-size:7.0pt; font-family:Symbol; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&#xb7;&lt;/span&gt;&lt;span style="word-spacing:5.325pt;"&gt;&#160;&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;either 
a track record of, or the potential for, above-average earnings and dividend growth;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; text-indent:-8.65pt; font-weight:normal; margin-left:8.65pt; font-style:normal;"&gt;&lt;span style="font-size:7.0pt; font-family:Symbol; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&#xb7;&lt;/span&gt;&lt;span style="word-spacing:5.325pt;"&gt;&#160;&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;a competitive current dividend yield;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; text-indent:-8.65pt; font-weight:normal; margin-left:8.65pt; font-style:normal;"&gt;&lt;span style="font-size:7.0pt; font-family:Symbol; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&#xb7;&lt;/span&gt;&lt;span style="word-spacing:5.325pt;"&gt;&#160;&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;a sound balance sheet and solid cash flow to support future 
dividend increases;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; text-indent:-8.65pt; font-weight:normal; margin-left:8.65pt; font-style:normal;"&gt;&lt;span style="font-size:7.0pt; font-family:Symbol; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&#xb7;&lt;/span&gt;&lt;span style="word-spacing:5.325pt;"&gt;&#160;&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;a 
sustainable competitive advantage and leading market position; and&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; text-indent:-8.65pt; font-weight:normal; margin-left:8.65pt; font-style:normal;"&gt;&lt;span style="font-size:7.0pt; font-family:Symbol; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&#xb7;&lt;/span&gt;&lt;span style="word-spacing:5.325pt;"&gt;&#160;&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;attractive valuations, such as low price/earnings, price/cash 
flow, or price/sales ratios.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;While most assets are typically invested in U.S. common stocks, 
the fund may invest in foreign stocks in keeping with its objective(s). &lt;/p&gt;</rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142969">Principal 
Risks</rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_RiskLoseMoneyMember_S000002075Summary1Member"
      id="ixv-142970"> The fund&#x2019;s share 
price fluctuates, which means you could lose money by investing in the fund.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_Dividend-payingstocks_S000002075Summary1Member"
      id="ixv-954">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt;Dividend-paying 
stocks:  &lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The fund&#x2019;s emphasis on dividend-paying stocks could cause the fund to underperform 
similar funds that invest without consideration of a company&#x2019;s track record of paying dividends. Stocks 
of companies with a history of paying dividends may not participate in a broad market advance to the 
same degree as most other stocks, and a sharp rise in interest rates or economic downturn could cause 
a company to unexpectedly reduce or eliminate its dividend.&lt;/span&gt;&lt;/p&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_Marketconditions_S000002075Summary1Member"
      id="ixv-958">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt;Market conditions:&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;  The value of the fund&#x2019;s 
investments may decrease, sometimes rapidly or unexpectedly, due to factors affecting an issuer held 
by the fund, particular industries, or the overall securities markets. A variety of factors can increase 
the volatility of the fund&#x2019;s holdings and markets generally, including economic, political, or regulatory 
developments, recessions, inflation, rapid interest rate changes, war, military conflict, acts of terrorism, 
natural disasters, and outbreaks of infectious illnesses or other widespread public health issues (such 
as the coronavirus pandemic) and related governmental and public responses (including sanctions). Certain 
events may cause instability across global markets, including reduced liquidity and disruptions in trading 
markets, while some events may affect certain geographic regions, countries, sectors, and industries 
more significantly than others. Government intervention in markets may impact interest rates, market 
volatility, and security pricing. These adverse developments may cause broad declines in market value 
due to short-term market movements or for significantly longer periods during more prolonged market downturns.&lt;/span&gt;&lt;/p&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_Stockinvesting_S000002075Summary1Member"
      id="ixv-962">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt;Stock 
investing:&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;  Stocks generally fluctuate in value more than bonds and may decline significantly 
over short time periods. There is a chance that stock prices overall will decline because stock markets 
tend to move in cycles, with periods of rising and falling prices. The value of stocks held by the fund 
may decline due to general weakness or volatility in the stock markets in which the fund invests or because 
of factors that affect a particular company or industry.&lt;/span&gt;&lt;/p&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_Large-andmid-capstocks_S000002075Summary1Member"
      id="ixv-966">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt;Large- and mid-cap stocks: &lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Securities issued by 
large- and mid-cap companies tend to be less volatile than securities issued by small-cap companies. 
However, large-cap companies may not be able to attain the high growth rates of successful small-cap 
companies, especially during strong economic periods, and may be unable to respond as quickly to competitive 
challenges. The &lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;fund&#x2019;s&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; share price could fluctuate more than the share price of 
a &lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;fund&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
that invests only in large-cap companies as stocks of mid-cap companies entail greater risk and are usually 
more volatile than stocks of large-cap companies.&lt;/span&gt;&lt;/p&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_Sectorexposure_S000002075Summary1Member"
      id="ixv-975">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt;Sector exposure:&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;  Issuers in the same 
economic sector may be similarly affected by economic or market events, making the fund more vulnerable 
to unfavorable developments in that economic sector than funds that invest more broadly. &lt;/span&gt;&lt;/p&gt;
</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_Foreigninvesting_S000002075Summary1Member"
      id="ixv-993">&lt;p style="-sec-ix-redline:true;font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt;Foreign 
investing:  &lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Non-U.S.&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;securities tend to be more volatile and have lower overall 
liquidity and trading volume than investments in U.S. securities and may lose value because of adverse 
local, political, social, or economic developments overseas, or due to changes in the exchange rates 
between foreign currencies and the U.S. dollar. Further, securities of non-U.S. issuers are subject to 
trading markets with potential governmental interference, varying regulatory, auditing, and accounting 
standards, and settlement and clearance practices that differ from those of U.S. issuers. Investment 
in non-U.S. securities also carries currency risk. Any attempts to hedge currency risk could be unsuccessful. 
Such investments may have higher transaction costs compared with U.S. markets. The fund&#x2019;s overall foreign 
investing risk is increased to the extent it has exposure to emerging markets.&lt;/span&gt;&lt;/p&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_Activemanagement_S000002075Summary1Member"
      id="ixv-999">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt;Active management:&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
 The fund&#x2019;s overall investment program and holdings selected by the fund&#x2019;s investment adviser may 
underperform the broad markets, relevant indices, or other funds with similar objectives and investment 
strategies.&lt;/span&gt;&lt;/p&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_Cybersecuritybreaches_S000002075Summary1Member"
      id="ixv-1003">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"&gt;Cybersecurity breaches:&lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;  The fund could be harmed by intentional 
cyberattacks and other cybersecurity breaches, including unauthorized access to the fund&#x2019;s assets, 
confidential information, or other proprietary information. In addition, a cybersecurity breach could 
cause one of the fund&#x2019;s service providers or financial intermediaries to suffer unauthorized data access, 
data corruption, or loss of operational functionality.&lt;/span&gt;&lt;/p&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142971">Performance</rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-1008">&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;The following performance 
information provides some indication of the risks of investing in the fund. The fund&#x2019;s performance 
information represents only past performance (before and after taxes) and is not necessarily an indication 
of future results. &lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The following bar chart illustrates how much returns can differ from year to year 
by showing calendar year returns and the best and worst calendar quarter returns during those &lt;/span&gt;&lt;span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt;years 
for the fund&#x2019;s Investor Class. Returns for other share classes vary since they have different expenses.&lt;/span&gt;&lt;/p&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142972">The following performance 
information provides some indication of the risks of investing in the fund. The following bar chart illustrates how much returns can differ from year to year 
by showing calendar year returns and the best and worst calendar quarter returns during those  years 
for the fund&#x2019;s Investor Class. Returns for other share classes vary since they have different expenses. The following table shows 
the average annual total returns for each class of the fund that has been in operation for at least one 
full calendar year. The fund&#x2019;s performance information included in the table is compared with a regulatory 
required index that represents an overall securities market (Regulatory Benchmark). In addition, the 
table may also include one or more indexes that more closely aligns to the fund&#x2019;s investment strategy 
(Strategy Benchmark(s)).</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142973"> The fund&#x2019;s performance 
information represents only past performance (before and after taxes) and is not necessarily an indication 
of future results.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:BarChartHeading
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142974">Calendar Year Returns</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-1038">&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse" width="100%"&gt;&lt;tr style="font-size:1pt;"&gt;&lt;td style="width:9.02%;"&gt;&#160;&lt;/td&gt;&lt;td style="width:14.01%;"&gt;&#160;&lt;/td&gt;&lt;td style="width:14.99%;"&gt;&#160;&lt;/td&gt;&lt;td style="width:13%;"&gt;&#160;&lt;/td&gt;&lt;td style="width:.49%;"&gt;&#160;&lt;/td&gt;&lt;td style="width:14.99%;"&gt;&#160;&lt;/td&gt;&lt;td style="width:14.99%;"&gt;&#160;&lt;/td&gt;&lt;td style="width:13%;"&gt;&#160;&lt;/td&gt;&lt;td style="width:5.5%;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:top; font-size:1pt;"&gt;&#160;&lt;/td&gt;&lt;td style="vertical-align:top; font-size:1pt;"&gt;&#160;&lt;/td&gt;&lt;td style="vertical-align:top;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;Quarter Ended&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;Total&lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;Return&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top; font-size:1pt;"&gt;&#160;&lt;/td&gt;&lt;td style="vertical-align:top; font-size:1pt;"&gt;&#160;&lt;/td&gt;&lt;td style="vertical-align:top;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;Quarter Ended&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;Total &lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;Return&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top; font-size:1pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:top; font-size:1pt;"&gt;&#160;&lt;/td&gt;&lt;td style="vertical-align:top; background-color:#E6E6E6;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;Best 
Quarter&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top; background-color:#E6E6E6;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;6/30/20&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top; background-color:#E6E6E6;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;15.92%&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top; font-size:1pt;"&gt;&#160;&lt;/td&gt;&lt;td style="vertical-align:top; background-color:#E6E6E6;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;Worst Quarter&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top; background-color:#E6E6E6;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;3/31/20&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top; background-color:#E6E6E6;"&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:center; font-weight:normal; text-decoration:none;"&gt;-18.66%&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:top; font-size:1pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      id="ixv-142975">Best 
Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      id="ixv-142976">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142977"
      unitRef="pure">0.1592</rr:BarChartHighestQuarterlyReturn>
    <rr:LowestQuarterlyReturnLabel
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      id="ixv-142978">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      id="ixv-142979">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142980"
      unitRef="pure">-0.1866</rr:BarChartLowestQuarterlyReturn>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-1082">&lt;p style="-sec-ix-redline:true;font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;The following table shows 
the average annual total returns for each class of the fund that has been in operation for at least one 
full calendar year. The fund&#x2019;s performance information included in the table is compared with a regulatory 
required index that represents an overall securities market (Regulatory Benchmark). In addition, the 
table may also include one or more indexes that more closely aligns to the fund&#x2019;s investment strategy 
(Strategy Benchmark(s)).&lt;/p&gt;&lt;p style="font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;"&gt;In addition, the table shows hypothetical after-tax returns to demonstrate how 
taxes paid by a shareholder may influence returns. 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&#x2019;s tax situation and may differ from those shown. 
After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred 
arrangements, such as a 401(k) account or an IRA. After-tax returns are shown only for the Investor Class 
and will differ for other share classes.&lt;/p&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142981"> 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.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142982"> Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. 
After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred 
arrangements, such as a 401(k) account or an IRA.</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableOneClassOfAfterTaxShown
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142983">After-tax returns are shown only for the Investor Class 
and will differ for other share classes.</rr:PerformanceTableOneClassOfAfterTaxShown>
    <rr:PerformanceTableHeading
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-142984">Average 
Annual Total Returns Periods 
ended December 31, 2024</rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      id="ixv-142985">1992-12-30</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142986"
      unitRef="pure">0.1350</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142987"
      unitRef="pure">0.1071</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="Context_20241231_20241231_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142988"
      unitRef="pure">0.1138</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_AfterTaxesOnDistributionsMember_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142989"
      unitRef="pure">0.1231</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="Context_20241231_20241231_AfterTaxesOnDistributionsMember_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142990"
      unitRef="pure">0.0996</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="Context_20241231_20241231_AfterTaxesOnDistributionsMember_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142991"
      unitRef="pure">0.1054</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_AfterTaxesOnDistributionsAndSalesMember_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142992"
      unitRef="pure">0.0887</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="Context_20241231_20241231_AfterTaxesOnDistributionsAndSalesMember_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142993"
      unitRef="pure">0.0843</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="Context_20241231_20241231_AfterTaxesOnDistributionsAndSalesMember_C000005435Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142994"
      unitRef="pure">0.0921</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      id="ixv-142995">2015-12-17</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142996"
      unitRef="pure">0.1365</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142997"
      unitRef="pure">0.1085</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="Context_20241231_20241231_C000166314Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-142998"
      unitRef="pure">0.1255</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      id="ixv-142999">2005-12-29</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143000"
      unitRef="pure">0.1321</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143001"
      unitRef="pure">0.1041</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="Context_20241231_20241231_C000012104Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143002"
      unitRef="pure">0.1108</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      id="ixv-143003">2021-02-22</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143004"
      unitRef="pure">0.1423</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="Context_20241231_20241231_C000225815Member_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143005"
      unitRef="pure">0.1061</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel
      contextRef="Context_20241231_20241231_Russell3000Index_S000002075Member_S000002075Summary1Member"
      id="_139_">Russell 3000&#xae; 
Index </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnLabel
      contextRef="Context_20241231_20241231_Russell3000Index1_S000002075Member_S000002075Summary1Member"
      id="ixv-143007">Russell 3000&#xae; 
Index </rr:AverageAnnualReturnLabel>
    <rr:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20241231_20241231_Russell3000Index1_S000002075Member_S000002075Summary1Member"
      id="ixv-143010">(reflects no deduction for fees, expenses, or taxes)</rr:IndexNoDeductionForFeesExpensesTaxes>
    <rr:AverageAnnualReturnSinceInception
      contextRef="Context_20241231_20241231_Russell3000Index2_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="_142_"
      unitRef="pure">0.1394</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_Russell3000Index3_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143012"
      unitRef="pure">0.2381</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="Context_20241231_20241231_Russell3000Index3_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143013"
      unitRef="pure">0.1386</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="Context_20241231_20241231_Russell3000Index3_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143014"
      unitRef="pure">0.1255</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnSinceInception
      contextRef="Context_20241231_20241231_Russell3000Index3_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="_146_"
      unitRef="pure">0.1135</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel
      contextRef="Context_20241231_20241231_SP500Index4_S000002075Member_S000002075Summary1Member"
      id="ixv-143016">S&amp;P 500 Index </rr:AverageAnnualReturnLabel>
    <rr:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20241231_20241231_SP500Index4_S000002075Member_S000002075Summary1Member"
      id="ixv-143017">(reflects no deduction for 
fees, expenses, or taxes)</rr:IndexNoDeductionForFeesExpensesTaxes>
    <rr:AverageAnnualReturnSinceInception
      contextRef="Context_20241231_20241231_SP500Index5_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="_149_"
      unitRef="pure">0.1444</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_SP500Index6_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143019"
      unitRef="pure">0.2502</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="Context_20241231_20241231_SP500Index6_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143020"
      unitRef="pure">0.1453</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="Context_20241231_20241231_SP500Index6_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143021"
      unitRef="pure">0.1310</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnSinceInception
      contextRef="Context_20241231_20241231_SP500Index6_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="_153_"
      unitRef="pure">0.1313</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel
      contextRef="Context_20241231_20241231_LipperLarge-CapCoreFundsIndex7_S000002075Member_S000002075Summary1Member"
      id="ixv-143023">Lipper 
Large-Cap Core Funds Index</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnSinceInception
      contextRef="Context_20241231_20241231_LipperLarge-CapCoreFundsIndex8_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="_155_"
      unitRef="pure">0.1338</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="Context_20241231_20241231_LipperLarge-CapCoreFundsIndex9_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143025"
      unitRef="pure">0.2349</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="Context_20241231_20241231_LipperLarge-CapCoreFundsIndex9_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143026"
      unitRef="pure">0.1333</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="Context_20241231_20241231_LipperLarge-CapCoreFundsIndex9_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="ixv-143027"
      unitRef="pure">0.1193</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnSinceInception
      contextRef="Context_20241231_20241231_LipperLarge-CapCoreFundsIndex9_S000002075Member_S000002075Summary1Member"
      decimals="INF"
      id="_159_"
      unitRef="pure">0.1202</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableClosingTextBlock
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-143029">Updated performance information 
is available through troweprice.com.</rr:PerformanceTableClosingTextBlock>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20241231_20241231_S000002075Member_S000002075Summary1Member"
      id="ixv-143030">troweprice.com</rr:PerformanceAvailabilityWebSiteAddress>
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and account minimums, accounts are charged an annual $20 fee.</xhtml:p></link:footnote>
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Inc., has contractually agreed to waive and/or bear all the Z Class&#x2019; expenses (excluding interest; 
expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired 
fund fees and expenses) in their entirety. T. Rowe Price Associates, Inc., expects this fee waiver and/or 
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