Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2011
Entity Registrant Name	dei_EntityRegistrantName	Value Line Premier Growth Fund, Inc.
Entity Central Index Key	dei_EntityCentralIndexKey	0000102767
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	May 01, 2012
Document Effective Date	dei_DocumentEffectiveDate	May 01, 2012
Prospectus Date	rr_ProspectusDate	May 01, 2012
Value Line Premier Growth Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Value Line Premier Growth Fund, Inc.
Objective [Heading]	rr_ObjectiveHeading	Investment objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund primarily seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and expenses
Expense Narrative [Text Block]	rr_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).
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio turnover
Portfolio Turnover [Text Block]	rr_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 20% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	20.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Fund to 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 except in year one. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal investment strategies of the Fund
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	To achieve the Fund’s goal, the Fund’s investment adviser, EULAV Asset Management (the “Adviser”), invests at least 80% of the Fund’s net assets in a diversified portfolio of U.S. equity securities with favorable growth prospects. In selecting securities for purchase or sale, the Adviser generally analyzes the issuer of a security using fundamental factors such as growth potential and earnings estimates and quantitative factors such as historical earnings, earnings momentum and price momentum. The Fund may invest in small, mid or large capitalization companies, including foreign companies. There are no set limitations of investments according to a company’s size, or to a sector weighting. At December 31, 2011, approximately 14% of the Fund’s investment securities were in information technology securities and approximately 22% were in industrial securities. The Adviser may sell securities for a variety of reasons, such as to secure gains, limit losses or redeploy assets into more promising opportunities.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	To achieve the Fund's goal, the Fund's investment adviser, EULAV Asset Management (the "Adviser"), invests at least 80% of the Fund's net assets in a diversified portfolio of U.S. equity securities with favorable growth prospects. In selecting securities for purchase or sale, the Adviser generally analyzes the issuer of a security using fundamental factors such as growth potential and earnings estimates and quantitative factors such as historical earnings, earnings momentum and price momentum. The Fund may invest in small, mid or large capitalization companies, including foreign companies. There are no set limitations of investments according to a company's size, or to a sector weighting. At December 31, 2011, approximately 14% of the Fund's investment securities were in information technology securities and approximately 22% were in industrial securities.
Risk [Heading]	rr_RiskHeading	Principal risks of investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	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 part or all of your investment. Therefore, before you invest in this Fund you should carefully evaluate the risks. The chief risk that you assume when investing in the Fund is market risk, the possibility that the securities in a certain market will decline in value because of factors such as economic conditions. Market risk may affect a single issuer, industry, sector of the economy or the market as a whole. The Fund may, from time to time, 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. Investing in smaller or newer companies involves the risk that these companies may have less capital, a shorter history of operations and less experienced management than larger more established companies. In addition, securities of smaller or newer companies may have more limited trading markets than the markets for securities of larger more established companies, and may be subject to wide price fluctuations. Investment in such companies tend to be more volatile and somewhat more speculative. The price of Fund shares will increase and decrease according to changes in the value of the Fund’s investments. The Fund will be affected by changes in stock prices, which have historically tended to fluctuate more than bond prices. Because the Fund is actively managed, its investment return depends on the ability of the Adviser to manage its portfolio successfully. There can be no guarantee that the Adviser’s investment strategies will produce the desired results. Investing in foreign companies may involve unique risks compared to investing in securities of U.S. issuers. These risks are more pronounced to the extent the Fund invests in issuers in countries with emerging markets or if the Fund invests significantly in one country. These risks may include: less information about foreign companies may be available due to less rigorous disclosure or accounting standards or regulatory practices; adverse effect of currency exchange rates or controls on the value of the Fund’s investment; the economies of foreign countries may grow at slower rates than expected or may experience a downturn or recession. An investment in the Fund is not a complete investment program and you should consider it just one part of your total investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. For a more complete discussion of risk, please turn to page 9.
Risk Lose Money [Text]	rr_RiskLoseMoney	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 part or all of your investment.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the Fund is not a complete investment program and you should consider it just one part of your total investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Fund performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	This bar chart and table can help you evaluate the potential risks of investing in the Fund. The bar chart below shows how returns for the Fund’s shares have varied over the past ten calendar years, and the table below shows the average annual total returns (before and after taxes) of these shares for one, five, and ten years. These returns are compared to the performance of the S&P 500® Index, which is a broad based market 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.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	This bar chart and table can help you evaluate the potential risks of investing in the Fund. The bar chart below shows how returns for the Fund's shares have varied over the past ten calendar years, and the table below shows the average annual total returns (before and after taxes) of these shares for one, five, and ten years. These returns are compared to the performance of the S&P 500® Index, which is a broad based market index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.vlfunds.com.
Performance Past Does Not Indicate Future [Text]	rr_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]	rr_BarChartHeading	Total Returns (before taxes) as of 12/31 each year (%)
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best Quarter: Q2 2009 18.60% Worst Quarter: Q4 2008 –24.67% After-tax returns in the table below 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, 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 (“IRA”).
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	18.60%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(24.67%)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table below 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	rr_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 ("IRA").
Value Line Premier Growth Fund \| Sp 500® Index
Risk/Return:	rr_RiskReturnAbstract
Index No Deduction for Fees, Expenses, Taxes [Text]	rr_IndexNoDeductionForFeesExpensesTaxes	(reflects no deduction for fees, expenses or taxes)
Value Line Premier Growth Fund	rr_AverageAnnualReturnLabel	S&P 500® Index (reflects no deduction for fees, expenses or taxes)
1 year	rr_AverageAnnualReturnYear01	2.11%
5 years	rr_AverageAnnualReturnYear05	(0.25%)
10 years	rr_AverageAnnualReturnYear10	2.92%
Value Line Premier Growth Fund \| C000020639 Value Line Premier Growth Fund
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	VALSX
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.24%
Total Annual Fund Operating Expenses	rr_NetExpensesOverAssets	1.24%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	126
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	393
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	681
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,500
2002	rr_AnnualReturn2002	(15.15%)
2003	rr_AnnualReturn2003	29.60%
2004	rr_AnnualReturn2004	18.42%
2005	rr_AnnualReturn2005	11.49%
2006	rr_AnnualReturn2006	10.68%
2007	rr_AnnualReturn2007	18.30%
2008	rr_AnnualReturn2008	(40.13%)
2009	rr_AnnualReturn2009	32.29%
2010	rr_AnnualReturn2010	21.66%
2011	rr_AnnualReturn2011	4.59%
Value Line Premier Growth Fund	rr_AverageAnnualReturnLabel	Return before taxes
1 year	rr_AverageAnnualReturnYear01	4.59%
5 years	rr_AverageAnnualReturnYear05	3.58%
10 years	rr_AverageAnnualReturnYear10	6.72%
Value Line Premier Growth Fund \| C000020639 Value Line Premier Growth Fund \| After Taxes on Distributions
Risk/Return:	rr_RiskReturnAbstract
Value Line Premier Growth Fund	rr_AverageAnnualReturnLabel	Return after taxes on distributions
1 year	rr_AverageAnnualReturnYear01	3.71%
5 years	rr_AverageAnnualReturnYear05	3.03%
10 years	rr_AverageAnnualReturnYear10	6.23%
Value Line Premier Growth Fund \| C000020639 Value Line Premier Growth Fund \| After Taxes on Distributions and Sales
Risk/Return:	rr_RiskReturnAbstract
Value Line Premier Growth Fund	rr_AverageAnnualReturnLabel	Return after taxes on distributions and sale of Fund shares
1 year	rr_AverageAnnualReturnYear01	4.14%
5 years	rr_AverageAnnualReturnYear05	3.01%
10 years	rr_AverageAnnualReturnYear10	5.85%

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Document Type

dei_DocumentType

485BPOS

Document Period End Date

dei_DocumentPeriodEndDate

Dec. 31, 2011

Entity Registrant Name

dei_EntityRegistrantName

Value Line Premier Growth Fund, Inc.

Entity Central Index Key

dei_EntityCentralIndexKey

0000102767

Amendment Flag

dei_AmendmentFlag

false

Document Creation Date

dei_DocumentCreationDate

May 01, 2012

Document Effective Date

dei_DocumentEffectiveDate

May 01, 2012

Prospectus Date

rr_ProspectusDate

May 01, 2012

Value Line Premier Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Value Line Premier Growth Fund, Inc.

Objective [Heading]

rr_ObjectiveHeading

Investment objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund primarily seeks long-term growth of capital.

Expense [Heading]

rr_ExpenseHeading

Fees and expenses

Expense Narrative [Text Block]

rr_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).

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio turnover

Portfolio Turnover [Text Block]

rr_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 20% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

20.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund to 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 except in year one. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal investment strategies of the Fund

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

To achieve the Fund’s goal, the Fund’s investment adviser, EULAV Asset Management (the “Adviser”), invests at least 80% of the Fund’s net assets in a diversified portfolio of U.S. equity securities with favorable growth prospects. In selecting securities for purchase or sale, the Adviser generally analyzes the issuer of a security using fundamental factors such as growth potential and earnings estimates and quantitative factors such as historical earnings, earnings momentum and price momentum. The Fund may invest in small, mid or large capitalization companies, including foreign companies. There are no set limitations of investments according to a company’s size, or to a sector weighting. At December 31, 2011, approximately 14% of the Fund’s investment securities were in information technology securities and approximately 22% were in industrial securities.

The Adviser may sell securities for a variety of reasons, such as to secure gains, limit losses or redeploy assets into more promising opportunities.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

To achieve the Fund's goal, the Fund's investment adviser, EULAV Asset Management (the "Adviser"), invests at least 80% of the Fund's net assets in a diversified portfolio of U.S. equity securities with favorable growth prospects. In selecting securities for purchase or sale, the Adviser generally analyzes the issuer of a security using fundamental factors such as growth potential and earnings estimates and quantitative factors such as historical earnings, earnings momentum and price momentum. The Fund may invest in small, mid or large capitalization companies, including foreign companies. There are no set limitations of investments according to a company's size, or to a sector weighting. At December 31, 2011, approximately 14% of the Fund's investment securities were in information technology securities and approximately 22% were in industrial securities.

Risk [Heading]

rr_RiskHeading

Principal risks of investing in the Fund

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

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 part or all of your investment. Therefore, before you invest in this Fund you should carefully evaluate the risks.

The chief risk that you assume when investing in the Fund is market risk, the possibility that the securities in a certain market will decline in value because of factors such as economic conditions. Market risk may affect a single issuer, industry, sector of the economy or the market as a whole.

The Fund may, from time to time, 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.

Investing in smaller or newer companies involves the risk that these companies may have less capital, a shorter history of operations and less experienced management than larger more established companies. In addition, securities of smaller or newer companies may have more limited trading markets than the markets for securities of larger more established companies, and may be subject to wide price fluctuations. Investment in such companies tend to be more volatile and somewhat more speculative.

The price of Fund shares will increase and decrease according to changes in the value of the Fund’s investments. The Fund will be affected by changes in stock prices, which have historically tended to fluctuate more than bond prices.

Because the Fund is actively managed, its investment return depends on the ability of the Adviser to manage its portfolio successfully. There can be no guarantee that the Adviser’s investment strategies will produce the desired results.

Investing in foreign companies may involve unique risks compared to investing in securities of U.S. issuers. These risks are more pronounced to the extent the Fund invests in issuers in countries with emerging markets or if the Fund invests significantly in one country. These risks may include: less information about foreign companies may be available due to less rigorous disclosure or accounting standards or regulatory practices; adverse effect of currency exchange rates or controls on the value of the Fund’s investment; the economies of foreign countries may grow at slower rates than expected or may experience a downturn or recession.

An investment in the Fund is not a complete investment program and you should consider it just one part of your total investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. For a more complete discussion of risk, please turn to page 9.

Risk Lose Money [Text]

rr_RiskLoseMoney

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 part or all of your investment.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

This bar chart and table can help you evaluate the potential risks of investing in the Fund. The bar chart below shows how returns for the Fund’s shares have varied over the past ten calendar years, and the table below shows the average annual total returns (before and after taxes) of these shares for one, five, and ten years. These returns are compared to the performance of the S&P 500® Index, which is a broad based market 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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

This bar chart and table can help you evaluate the potential risks of investing in the Fund. The bar chart below shows how returns for the Fund's shares have varied over the past ten calendar years, and the table below shows the average annual total returns (before and after taxes) of these shares for one, five, and ten years. These returns are compared to the performance of the S&P 500® Index, which is a broad based market index.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.vlfunds.com.

Performance Past Does Not Indicate Future [Text]

rr_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]

rr_BarChartHeading

Total Returns (before taxes) as of 12/31 each year (%)

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter: Q2 2009 18.60%

Worst Quarter: Q4 2008 –24.67%

After-tax returns in the table below 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, 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 (“IRA”).

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

18.60%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(24.67%)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns in the table below 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

rr_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 ("IRA").

Value Line Premier Growth Fund | Sp 500® Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

Value Line Premier Growth Fund

rr_AverageAnnualReturnLabel

S&P 500® Index (reflects no deduction for fees, expenses or taxes)

1 year

rr_AverageAnnualReturnYear01

2.11%