| Label | Element | Value | ||||||
|---|---|---|---|---|---|---|---|---|
| Value Line Small Cap Opportunities Fund, Inc. | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk/Return [Heading] | oef_RiskReturnHeading | VALUE LINE SMALL CAP OPPORTUNITIES FUND | ||||||
| Objective [Heading] | oef_ObjectiveHeading | Investment objective | ||||||
| Objective, Primary [Text Block] | oef_ObjectivePrimaryTextBlock | The Fund’s investment objective is long-term growth of capital.
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| Expense Heading [Optional Text] | oef_ExpenseHeading | Fees and expenses | ||||||
| Expense Narrative [Text Block] | oef_ExpenseNarrativeTextBlock | This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. There are no shareholder fees (fees paid directly from your investment) when you buy and sell shares of the Fund. Future expenses may be greater or less. You may be required to pay commissions and/or other forms of compensation to a financial intermediary for transactions in Institutional Class shares of the Fund, which are not reflected in the tables or the Example below. Please contact your financial intermediary about whether such a commission may apply to your transaction.
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| Operating Expenses Caption [Optional Text] | oef_OperatingExpensesCaption | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | ||||||
| Expense Example [Heading] | oef_ExpenseExampleHeading | Example | ||||||
| Expense Example Narrative [Text Block] | oef_ExpenseExampleNarrativeTextBlock | The example that follows 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 whether or not you redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
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| Portfolio Turnover [Heading] | oef_PortfolioTurnoverHeading | Portfolio turnover | ||||||
| Portfolio Turnover [Text Block] | oef_PortfolioTurnoverTextBlock |
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund 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’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 16% of the average value of its portfolio.
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| Portfolio Turnover, Rate | oef_PortfolioTurnoverRate | 16.00% | ||||||
| Strategy [Heading] | oef_StrategyHeading | Principal investment strategies of the Fund | ||||||
| Strategy Narrative [Text Block] | oef_StrategyNarrativeTextBlock |
Under normal circumstances, EULAV Asset Management (the “Adviser”) invests at least 80% of the Fund’s assets in stocks of U.S. companies with small-market capitalizations (the “80% Policy”). The 80% Policy can be changed without shareholder approval upon at least 60 days’ prior written notice. A portion of the Fund’s assets may also be invested in stocks of U.S. mid-market capitalization companies.
The Fund defines “stocks of U.S. companies” as companies that do business in the U.S., are organized in the U.S. or whose stock is traded on a U.S. exchange or over-the-counter market. Although there is not a universal definition, the Fund considers a “small-market capitalization company” to be a company with a market capitalization that is less than the value of the largest capitalization company in the Russell 2000 Index or $12 billion, whichever is greater. The market capitalizations of companies within the Russell 2000 Index change and, as of March 31, 2026, the largest stock by market capitalization was $63.6 billion. Small-growth portfolios focus on faster-growing companies whose shares are at the lower end of the market- capitalization range. These portfolios tend to favor companies in up-and-coming industries or young firms in their early growth stages. Because these businesses are fast-growing and often richly valued, their stocks tend to be volatile. A company’s categorization is based on its market capitalization at the time of purchase by the Fund.
While the Fund is actively managed by the Adviser, the Adviser utilizes the rankings of companies by the Value Line Timeliness™ Ranking System or the Value Line Performance™ Ranking System (the “Ranking Systems”) to assist in selecting equity securities for purchase or sale. The Ranking Systems are proprietary quantitative systems that compare an estimate of the probable market performance of each stock within a universe during the next six to twelve months to that of all stocks within that universe and ranks stocks on a scale of 1 (highest) to 5 (lowest). The universe consists of approximately 1,700 stocks of large-, mid- and small-market capitalization companies for the Value Line Timeliness Ranking System and approximately 1,700 stocks of smaller and mid-sized capitalization companies for the Value Line Performance Ranking System. While the Adviser utilizes the rankings of companies by the Ranking Systems to assist in selecting stocks for the Fund, it has broad discretion in managing the Fund’s portfolio, including whether and which ranked stocks to include within the Fund’s portfolio, whether and when to buy or sell stocks based upon changes in their rankings, and the frequency and timing of rebalancing the Fund’s portfolio.
The Adviser will determine the percentage of the Fund’s assets invested in each stock based on the stock’s relative attractiveness taking into account the potential risk and reward of each investment. The Adviser may sell securities for a variety of reasons, such as to secure gains, limit losses or redeploy assets into more promising opportunities.
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| Strategy Portfolio Concentration [Text] | oef_StrategyPortfolioConcentration | Under normal circumstances, EULAV Asset Management (the “Adviser”) invests at least 80% of the Fund’s assets in stocks of U.S. companies with small-market capitalizations (the “80% Policy”). The 80% Policy can be changed without shareholder approval upon at least 60 days’ prior written notice. A portion of the Fund’s assets may also be invested in stocks of U.S. mid-market capitalization companies. | ||||||
| Bar Chart and Performance Table [Heading] | oef_BarChartAndPerformanceTableHeading | Fund performance | ||||||
| Performance Narrative [Text Block] | oef_PerformanceNarrativeTextBlock | The bar chart and table that follow can help you evaluate the potential risks of investing in the Fund. The bar chart shows how returns for the Fund’s Investor Class shares have varied over the past ten calendar years. The table compares the performance of the Investor Class and Institutional Class shares to the performance of the Russell 2000 Index, which is a broad-based regulatory index. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated performance information is available at: www.vlfunds.com.
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| Performance Information Illustrates Variability of Returns [Text] | oef_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and table that follow can help you evaluate the potential risks of investing in the Fund. | ||||||
| Performance Availability Website Address [Text] | oef_PerformanceAvailabilityWebSiteAddress | www.vlfunds.com | ||||||
| Performance Past Does Not Indicate Future [Text] | oef_PerformancePastDoesNotIndicateFuture | The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. | ||||||
| Bar Chart [Heading] | oef_BarChartHeading | Total Returns of Investor Class (before taxes) as of 12/31 each year (%) | ||||||
| Bar Chart Closing [Text Block] | oef_BarChartClosingTextBlock |
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| Highest Quarterly Return, Label [Optional Text] | oef_HighestQuarterlyReturnLabel | Best Quarter: | ||||||
| Highest Quarterly Return, Date | oef_BarChartHighestQuarterlyReturnDate | Dec. 31, 2020 | ||||||
| Highest Quarterly Return | oef_BarChartHighestQuarterlyReturn | 23.00% | ||||||
| Lowest Quarterly Return, Label [Optional Text] | oef_LowestQuarterlyReturnLabel | Worst Quarter: | ||||||
| Lowest Quarterly Return, Date | oef_BarChartLowestQuarterlyReturnDate | Mar. 31, 2020 | ||||||
| Lowest Quarterly Return | oef_BarChartLowestQuarterlyReturn | (19.40%) | ||||||
| Performance Table Heading | oef_PerformanceTableHeading | Average Annual Total Returns for Periods Ended December 31, 2025 | ||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | oef_IndexNoDeductionForFeesExpensesTaxes | (Reflects no deduction for fees, expenses or taxes) | ||||||
| Performance Table Uses Highest Federal Rate | oef_PerformanceTableUsesHighestFederalRate | After-tax returns included in the table that follows are shown for Investor Class shares only and are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. | ||||||
| Performance Table Not Relevant to Tax Deferred | oef_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”). | ||||||
| Performance Table One Class of after Tax Shown [Text] | oef_PerformanceTableOneClassOfAfterTaxShown | After-tax returns for Institutional Class shares will vary from those of Investor Class shares shown in the table. | ||||||
| Performance Table Narrative | oef_PerformanceTableNarrativeTextBlock | After-tax returns included in the table that follows are shown for Investor Class shares only and are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns for Institutional Class shares will vary from those of Investor Class shares shown in the table. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”).
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| Value Line Small Cap Opportunities Fund, Inc. | Risk Lose Money [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Investing in any mutual fund involves risk, including the risk that you may receive little or no return on your investment, and that you may lose money. | ||||||
| Value Line Small Cap Opportunities Fund, Inc. | Risk Not Insured [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. | ||||||
| Value Line Small Cap Opportunities Fund, Inc. | Growth Style Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Growth Style Risk. Growth stocks may be more volatile than other stocks because they are generally more sensitive to investor perceptions and market movements. In addition, growth stocks as a group may be out of favor at times and underperform the overall equity market for long periods while investors concentrate on other types of stocks, such as “value” stocks.
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| Value Line Small Cap Opportunities Fund, Inc. | Market Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Market Risk. The chief risk that you assume when investing in the Fund is market risk which is the possibility that the securities in a certain market will decline in value because of factors such as recessions, changes in interest rates, global trade policies, war, terrorism including cyber terrorism, natural and environmental disasters as well as public health emergencies. Market risk may have a material impact on a single issuer, an industry, a sector of the economy or the market as a whole and could be significant and cause losses.
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| Value Line Small Cap Opportunities Fund, Inc. | Equity Securities Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Equity Securities Risk. Equity securities represent ownership in a corporation and their prices fluctuate for a number of reasons including issuer-specific events, market perceptions and general movements in the equity markets. The resulting fluctuation in the price of equity securities may take the form of a drastic movement or a sustained trend. If an issuer is liquidated or declares bankruptcy, the claims of owners of bonds will take precedence over the claims of owners of common stocks. Historically, the prices of equity securities have fluctuated more than bond prices.
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| Value Line Small Cap Opportunities Fund, Inc. | Sector Allocation Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Sector Allocation Risk. A sector is a group of selected industries within the economy, such as information technology. The Fund may be overweighted or underweighted in certain sectors, which may cause the Fund’s performance to be more or less sensitive, respectively, to developments affecting those sectors. Although the Fund does not concentrate in any industry, the Fund has invested heavily at times in the industrial sector, which is highly sensitive to economic cycles, commodity prices, supply chain disruptions, and operational and regulatory headwinds.
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| Value Line Small Cap Opportunities Fund, Inc. | Small and Mid-Sized Company Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Small and Mid-Sized Company Risk. Investments in small and mid-sized companies may involve greater risks than investments in larger, more established companies — as a general rule, the smaller the market capitalization of the company, the greater the risk. As compared to larger companies, small and mid-sized companies may have limited management experience or depth, limited ability to generate or borrow capital needed for growth, and limited products or services, or may operate in less established markets. Accordingly, small and mid-sized company securities may be more sensitive to changing economic, market, and industry conditions and may be more volatile and less liquid than equity securities of larger companies, especially over the short term. Small and mid-sized companies also may fall out of favor relative to larger companies in certain market cycles, causing the Fund to incur losses or underperform.
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| Value Line Small Cap Opportunities Fund, Inc. | Liquidity Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Liquidity Risk. Certain securities may be difficult or impossible to sell at the time and price that the Fund would like when there is little or no active trading market. If a security cannot be sold by the Fund at a favorable time and price, the Fund may have to lower the price, sell other securities instead, or forgo an investment opportunity in order to obtain liquidity. This could have a negative effect on the Fund’s performance.
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| Value Line Small Cap Opportunities Fund, Inc. | Ranking Systems Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Ranking Systems Risk. The Adviser’s use of the results of the Ranking Systems in managing the Fund involves the risk that the Ranking Systems may not have the predictive qualities anticipated by the Adviser or that over certain periods of time the price of securities not covered by the Ranking Systems, or lower-ranked securities, may appreciate to a greater extent than those securities in the Fund’s portfolio. Quantitative models like the Ranking Systems may not work as anticipated, potentially resulting in lower investment performance or losses to the Fund.
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| Value Line Small Cap Opportunities Fund, Inc. | Active Management Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Active Management Risk. Because the Fund is actively managed, its investment return depends on the ability of the Adviser to manage the Fund’s portfolio successfully. There can be no guarantee that the Adviser’s investment strategies will produce the desired results or that the investment objective of the Fund will be achieved.
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| Value Line Small Cap Opportunities Fund, Inc. | Market Disruption Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Market Disruption Risk. Markets may be impacted by negative external and/or direct and indirect economic factors such as pandemics (including COVID-19), natural disasters, global trade policies and political unrest or uncertainties. The adverse impact of any one or more of these events on the market value of Fund investments could be significant and can affect the economies of many nations, individual companies and the market in general. The Adviser cannot predict the likelihood of occurrence or the effects of similar disruptive events in the future on the U.S. and other economies, or the investments in the Fund’s portfolio or the potential for success of the Fund.
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| Value Line Small Cap Opportunities Fund, Inc. | Cybersecurity Risk [Member] | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Risk [Text Block] | oef_RiskTextBlock | Cybersecurity Risk. As the use of technology becomes more prevalent in the course of business, the Fund becomes more susceptible to operational, financial and information security risks resulting from cyberattacks and/or technological malfunctions. Successful cyberattacks and/or technological malfunctions affecting the Fund or its service providers can result in, among other things, financial losses to the Fund and its shareholders, the inability to process transactions with shareholders or other parties and the release of private shareholder information or confidential Fund information. While measures have been developed which are designed to reduce the risks associated with cybersecurity, there are inherent limitations in such measures and there is no guarantee those measures will be effective, particularly since the Fund does not directly control the cybersecurity measures of its service providers, financial intermediaries or companies in which it invests or with which it does business.
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| Value Line Small Cap Opportunities Fund, Inc. | Value Line Small Cap Opportunities Fund, Inc. | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Management Fees (as a percentage of Assets) | oef_ManagementFeesOverAssets | 0.75% | ||||||
| Distribution and Service (12b-1) Fees | oef_DistributionAndService12b1FeesOverAssets | 0.25% | ||||||
| Other Expenses (as a percentage of Assets): | oef_OtherExpensesOverAssets | 0.21% | ||||||
| Expenses (as a percentage of Assets) | oef_ExpensesOverAssets | 1.21% | ||||||
| Expense Example, with Redemption, 1 Year | oef_ExpenseExampleYear01 | $ 123 | ||||||
| Expense Example, with Redemption, 3 Years | oef_ExpenseExampleYear03 | 384 | ||||||
| Expense Example, with Redemption, 5 Years | oef_ExpenseExampleYear05 | 665 | ||||||
| Expense Example, with Redemption, 10 Years | oef_ExpenseExampleYear10 | 1,466 | ||||||
| Expense Example, No Redemption, 1 Year | oef_ExpenseExampleNoRedemptionYear01 | 123 | ||||||
| Expense Example, No Redemption, 3 Years | oef_ExpenseExampleNoRedemptionYear03 | 384 | ||||||
| Expense Example, No Redemption, 5 Years | oef_ExpenseExampleNoRedemptionYear05 | 665 | ||||||
| Expense Example, No Redemption, 10 Years | oef_ExpenseExampleNoRedemptionYear10 | $ 1,466 | ||||||
| Value Line Small Cap Opportunities Fund, Inc. | Institutional | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Management Fees (as a percentage of Assets) | oef_ManagementFeesOverAssets | 0.75% | ||||||
| Distribution and Service (12b-1) Fees | oef_DistributionAndService12b1FeesOverAssets | 0.00% | ||||||
| Other Expenses (as a percentage of Assets): | oef_OtherExpensesOverAssets | 0.22% | ||||||
| Expenses (as a percentage of Assets) | oef_ExpensesOverAssets | 0.97% | ||||||
| Expense Example, with Redemption, 1 Year | oef_ExpenseExampleYear01 | $ 99 | ||||||
| Expense Example, with Redemption, 3 Years | oef_ExpenseExampleYear03 | 309 | ||||||
| Expense Example, with Redemption, 5 Years | oef_ExpenseExampleYear05 | 536 | ||||||
| Expense Example, with Redemption, 10 Years | oef_ExpenseExampleYear10 | 1,190 | ||||||
| Expense Example, No Redemption, 1 Year | oef_ExpenseExampleNoRedemptionYear01 | 99 | ||||||
| Expense Example, No Redemption, 3 Years | oef_ExpenseExampleNoRedemptionYear03 | 309 | ||||||
| Expense Example, No Redemption, 5 Years | oef_ExpenseExampleNoRedemptionYear05 | 536 | ||||||
| Expense Example, No Redemption, 10 Years | oef_ExpenseExampleNoRedemptionYear10 | $ 1,190 | ||||||
| Russell 2000 Index (Reflects no deduction for fees, expenses or taxes) | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 12.81% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 6.09% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 9.62% | ||||||
| Value Line Small Cap Opportunities Fund, Inc. | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Annual Return [Percent] | oef_AnnlRtrPct | 14.37% | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | 17.64% | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | (4.74%) | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | 25.14% | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | 26.60% | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | 15.21% | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | (19.11%) | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | 22.00% | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | 14.24% | ||||||
| Annual Return [Percent] | oef_AnnlRtrPct | 6.35% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 6.35% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 6.67% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 10.86% | ||||||
| Value Line Small Cap Opportunities Fund, Inc. | After Taxes on Distributions | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 4.84% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 5.89% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 9.15% | ||||||
| Value Line Small Cap Opportunities Fund, Inc. | After Taxes on Distributions and Sales | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 4.85% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 5.15% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 8.47% | ||||||
| Institutional | ||||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 6.61% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 6.93% | ||||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 11.40% |