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. 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 and returns may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund pursues its investment objective by investing at least 80% of the value of its net assets in equity securities of small capitalization companies. In creating a diversified portfolio of investments in small-sized companies, WesBanco Investment Department, a division of WesBanco Bank, Inc. (the Adviser), defines small companies as companies that do not exceed the market capitalizations in the Russell 2000^® Index (Russell 2000), or the Standard & Poor's SmallCap 600^® Index (S&P 600) at the time of purchasing a security. As of January 31, 2020, the market capitalization of the Russell 2000 ranged from approximately $763 million to $7.9 billion, and as of January 31, 2020, the market capitalization of the S&P 600 ranged from approximately $87 million to $4.6 billion.

The Adviser seeks to select common stocks of companies with growth characteristics, such as above-average earnings growth potential or where significant changes are taking place, such as new products, services, or methods of distribution, or overall business restructuring. The Fund will invest primarily in securities issued by domestic companies. The Fund may purchase exchange traded funds (ETFs) or other investment companies, in order to achieve exposure to a specific market sector, to achieve exposure to foreign markets (which may include emerging markets) or for other reasons consistent with its investment strategy. The shares of ETFs are listed and traded on stock exchanges at market prices. The Fund may also purchase American Depository Receipts (ADRs) and other domestically traded securities of foreign companies.

For additional information on the Fund's investment strategies, please see the section "More About the Funds' Investment Strategies and Risks" beginning on page 28 of this prospectus.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

The loss of money is a risk of investing in this Fund. Other principal risks of investing in the Fund are below.

*Stock Market Risks:*	The value of equity securities rise and fall. The portfolio of a Fund investing in equity securities will reflect changes in prices of individual stocks held in the Fund's portfolio. Consequently, the Fund's share price may decline.
*Risks Related to Investing for Growth:*	Growth stocks depend more on price changes for returns and may be more adversely affected in a down market compared to value stocks.
*Risks Related to Company Size:*	The smaller the capitalization of a company, the less liquid its stock and the more volatile its price.
*Liquidity Risks:*	A Fund may not be able to sell a security when it wants. Liquidity risk may make it more difficult to sell or buy a security at a favorable price or time.
*Sector Risks:*	Certain market sectors may underperform other sectors or the market as a whole.
*Risks of Foreign Investing:*	Political, social, currency-rate fluctuations, and economic instability within foreign countries may cause the value of the Fund's foreign investments to decline.
*Risks of Emerging Markets:*	Investments in emerging markets are subject to all the risks associated with foreign investing; however, these risks may be magnified in emerging markets. Emerging market countries may have relatively unstable governments and may present the risk of nationalization of businesses, expropriation, confiscatory taxation or, in certain instances, reversion to closed market, centrally planned economies. Generally, countries are considered emerging markets if they are included in any one of the MSCI emerging markets indices.
*Exchange-Traded Funds Risks:*	ETFs may be subject to the following risks that do not apply to conventional mutual funds: » the market price of an ETF's shares may trade above or below their net asset value; » an active trading market for an ETF's shares may not develop or be maintained; or » trading of an ETF's shares may be halted if the listing exchange's officials deem such action appropriate. Investing in ETFs may result in higher fees and expenses for a Fund, because the Fund and its shareholders will bear a pro rata portion of the ETF's fees and expenses.
*Risks of Investing in ADRs and Domestically Traded Securities of Foreign Issuers:*	Because the Fund may invest in ADRs and other domestically traded securities of foreign companies, the Fund's share price may be more affected by foreign economic and political conditions, taxation policies, and accounting and auditing standards than would otherwise be the case.
*Manager Risk:*	The Fund is actively managed and the investment techniques and security selection used by the Fund's managers may not produce the desired results and may cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.

An investment in the Fund is not a deposit of any bank, including WesBanco Bank, Inc., and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other government agency.

For more information regarding the risks of investing in the Fund, please see the section "More About the Funds' Investment Strategies and Risks" beginning on page 28 of this prospectus.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank, including WesBanco Bank, Inc., and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other government agency.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The performance information shown below will help you analyze the Fund's investment risks in light of its historical returns. The Risk/Return Bar Chart shows the variability of the Fund's total returns on a calendar year-by-year basis and provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year. The Average Annual Total Return Table shows returns averaged over the stated periods and shows how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results. Updated performance information for the Fund is available at www.wesmarkfunds.com or by calling 1-800-864-1013.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-800-864-1013

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Within the periods shown in the bar chart, the Fund's highest quarterly return was 19.11% (quarter ended 12/31/2011). Its lowest quarterly return was -21.77% (quarter ended 9/30/2011).

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Return After Taxes is shown to illustrate the effect of federal taxes on Fund 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'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 IRAs.

For the periods ended December 31, 2019:

WesMark Small Company Growth Fund

Trading Symbol

dei_TradingSymbol

WMKSX

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.26%

Total Annual Fund Operating Expenses

rr_NetExpensesOverAssets

1.27%

Three Years

rr_ExpenseExampleYear03

403

Ten Years

rr_ExpenseExampleYear10

$ 1,532

2011

rr_AnnualReturn2011

0.07%

2013

rr_AnnualReturn2013

39.95%

2015

rr_AnnualReturn2015

(2.87%)

2017

rr_AnnualReturn2017

13.19%

2019

rr_AnnualReturn2019

20.32%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2011

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.77%)

5 Years

rr_AverageAnnualReturnYear05

4.92%

1 Year

rr_AverageAnnualReturnYear01

20.32%

10 Years

rr_AverageAnnualReturnYear10

7.97%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

3.64%

1 Year

rr_AverageAnnualReturnYear01

25.53%

10 Years

rr_AverageAnnualReturnYear10

11.83%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

6.90%

Risk/Return [Heading]

rr_RiskReturnHeading

Summary Sections WesMark Growth Fund

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The WesMark Growth Fund (the Fund) seeks to achieve capital appreciation.

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.

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

55.00%

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

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. 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 and returns may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund pursues its investment objective primarily by selecting equity securities of growth oriented companies. WesBanco Investment Department, a division of WesBanco Bank, Inc. (the Adviser), seeks to invest in companies that are expected to achieve higher than average profitability ratios such as operating profit margin or return on equity or which are growing their annual earnings or sales. Equity securities may include common stocks, preferred stocks, securities (including debt securities) that are convertible into common stocks, and exchange traded funds (ETFs) and other investment companies. The Fund will invest primarily in securities issued by domestic companies. The Fund may purchase ETFs or other investment companies in order to achieve exposure to a specific market sector, to achieve exposure to foreign markets (which may include emerging markets) or for other reasons consistent with its investment strategy. The shares of ETFs are listed and traded on stock exchanges at market prices. The Fund may also purchase American Depository Receipts (ADRs) and other domestically traded securities of foreign companies.

In an effort to increase the income of the Fund, the Fund may sell call options on equity securities held in the Fund. Additionally, the Fund may buy a put option on one or more securities held in the Fund in an effort to protect unrealized gains in such securities or to protect against downside losses in such securities.

For additional information on the Fund's investment strategies, please see the section "More About the Funds' Investment Strategies and Risks" beginning on page 28 of this prospectus.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

The loss of money is a risk of investing in this Fund. Other principal risks of investing in the Fund are below.

*Stock Market Risks:*	The value of equity securities rise and fall. The portfolio of a Fund investing in equity securities will reflect changes in prices of individual stocks held in the Fund's portfolio. Consequently, the Fund's share price may decline.
*Risks Related to Investing for Growth:*	Growth stocks depend more on price changes for returns and may be more adversely affected in a down market compared to value stocks.
*Risks Related to Company Size:*	The smaller the capitalization of a company, the less liquid its stock and the more volatile its price.
*Liquidity Risks:*	A Fund may not be able to sell a security when it wants. Liquidity risk may make it more difficult to sell or buy a security at a favorable price or time.
*Sector Risks:*	Certain market sectors may underperform other sectors or the market as a whole.
*Risks of Foreign Investing:*	Political, social, currency-rate fluctuations, and economic instability within foreign countries may cause the value of the Fund's foreign investments to decline.
*Risks of Emerging Markets:*	Investments in emerging markets are subject to all the risks associated with foreign investing; however, these risks may be magnified in emerging markets. Emerging market countries may have relatively unstable governments and may present the risk of nationalization of businesses, expropriation, confiscatory taxation or, in certain instances, reversion to closed market, centrally planned economies. Generally, countries are considered emerging markets if they are included in any one of the MSCI emerging markets indices.
*Exchange-Traded Funds Risks:*	ETFs may be subject to the following risks that do not apply to conventional mutual funds: » the market price of an ETF's shares may trade above or below their net asset value; » an active trading market for an ETF's shares may not develop or be maintained; or » trading of an ETF's shares may be halted if the listing exchange's officials deem such action appropriate. Investing in ETFs may result in higher fees and expenses for a Fund, because the Fund and its shareholders will bear a pro rata portion of the ETF's fees and expenses
*Risks of Investing in ADRs and Domestically Traded Securities of Foreign Issuers:*	Because the Fund may invest in ADRs and other domestically traded securities of foreign companies, the Fund's share price may be more affected by foreign economic and political conditions, taxation policies, and accounting and auditing standards than would otherwise be the case.
*Risks of Investing in Derivative Contracts and Hybrid Instruments*	The Funds' exposure to derivative contracts and hybrid instruments, either directly or indirectly, through another investment company, may involve risks different from or possibly greater than the risk associated with investing directly in a security instead of the derivative. Risks include: 1) the value of the derivative may not correlate with the value of the underlying security or may correlate inversely; 2) any potential risk reduction may be offset with gain limitations; 3) derivatives may be difficult to price, thus involving additional payments by the Funds; 4) possible adverse tax consequences; and 5) other risks, such as but not limited to, stock market, interest rate, credit, currency, liquidity, and leverage risks.
*Manager Risk:*	The Fund is actively managed and the investment techniques and security selection used by the Fund's managers may not produce the desired results and may cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.

An investment in the Fund is not a deposit of any bank, including WesBanco Bank, Inc., and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other government agency.

For more information regarding the risks of investing in the Fund, please see the section "More About the Funds' Investment Strategies and Risks" beginning on page 28 of this prospectus.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank, including WesBanco Bank, Inc., and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other government agency.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The performance information shown below will help you analyze the Fund's investment risks in light of its historical returns. The Risk/Return Bar Chart shows the variability of the Fund's total returns on a calendar year-by-year basis and provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year. The Average Annual Total Return Table shows returns averaged over the stated periods and shows how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results. Updated performance information is available at www.wesmarkfunds.com or by calling 1-800-864-1013.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-800-864-1013

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Within the periods shown in the bar chart, the Fund's highest quarterly return was 14.05% (quarter ended 3/31/2019). Its lowest quarterly return was -18.56% (quarter ended 9/30/2011).

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Return After Taxes is shown to illustrate the effect of federal taxes on Fund 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'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 IRAs.

For the periods ended December 31, 2019:

WesMark Growth Fund

Trading Symbol

dei_TradingSymbol

WMKGX

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.14%

Total Annual Fund Operating Expenses

rr_NetExpensesOverAssets

1.15%

Three Years

rr_ExpenseExampleYear03

365

Ten Years

rr_ExpenseExampleYear10

$ 1,396

2011

rr_AnnualReturn2011

(6.06%)

2013

rr_AnnualReturn2013

34.92%

2015

rr_AnnualReturn2015

(1.94%)

2017

rr_AnnualReturn2017

24.22%

2019

rr_AnnualReturn2019

26.53%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2019

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.56%)

5 Years

rr_AverageAnnualReturnYear05

7.76%

1 Year

rr_AverageAnnualReturnYear01

24.68%

10 Years

rr_AverageAnnualReturnYear10

9.44%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

5.86%

1 Year

rr_AverageAnnualReturnYear01

31.49%

10 Years

rr_AverageAnnualReturnYear10

13.56%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

10.20%

Risk/Return [Heading]

rr_RiskReturnHeading

Summary Sections WesMark Balanced Fund

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The WesMark Balanced Fund (the "Fund") seeks to achieve capital appreciation and income.

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.

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

31.00%

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

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. 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 and returns may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund pursues its investment objective by investing in a mix of equity, fixed-income, and money market investments. The Fund's portfolio is constructed by WesBanco Investment Department, a division of WesBanco Bank, Inc. (the Adviser), using an asset allocation process. The Adviser first determines the percentage of the Fund's portfolio to invest in equity securities, the percentage to invest in fixed-income securities, and the percentage to invest in money market investments. The percentage ranges of securities in each asset class are: equity securities 30-70%; fixed-income securities 30-70%; and money market investments 0-40%. The Adviser will then select securities for each asset class. Within the equity allocation, the Adviser may use a blend of styles in selecting stocks, i.e., stocks may be selected for their growth characteristics, or value characteristics, or both. In addition, the Adviser may consider the income potential of a security resulting in an equity position that may be overweight in sectors that pay dividends.

The Adviser anticipates investing the equity allocation primarily in the equity securities of domestic companies with large and medium market capitalizations. However, the Adviser may also invest a portion of the equity allocation in American Depository Receipts (ADRs) and other domestically traded securities of foreign companies, exchange traded funds (ETFs) or other investment companies that invest in foreign securities (which may include emerging markets), real estate investment trusts (REITs), and equity securities of companies with small market capitalizations. Also, in an effort to increase the income of the Fund, the Fund may sell call options on equity securities held in the Fund. Additionally, the Fund may buy a put option on one or more securities held in the Fund in an effort to protect unrealized gains in such securities or to protect against downside losses in such securities. Within the fixed-income allocation, the Adviser primarily selects U.S. dollar denominated, primarily investment-grade, fixed income securities. In addition, the Fund may invest in high-yield fixed income securities when the Adviser considers the risk-return prospects of those sectors to be attractive. The Adviser expects that, normally, no more than 15% of the Fund's total assets will be invested in securities that are rated below investment grade. However, the Fund may opportunistically invest up to 25% of its total assets in noninvestment-grade debt securities. Investment-grade fixed-income securities are rated in one of the four highest categories (BBB- or higher) by a nationally recognized statistical rating organization (NRSRO). Noninvestment-grade fixed-income securities are rated in one of the six lowest categories (BB or lower) by a NRSRO, or in either case if unrated, of comparable quality as determined by the Adviser. The Adviser seeks to enhance the Fund's performance by allocating relatively more of its fixed-income allocation to the sector that the Adviser expects to offer the best balance between total return and risk and thus offer the greatest potential for return. The Adviser may lengthen or shorten duration from time to time based on its interest rate outlook, but the Fund has no set duration parameters. Duration measures the price sensitivity of a fixed-income security to changes in interest rates. The Fund may invest in fixed-income securities with any maturity. Certain of the government securities in which the Fund invests are not backed by the full faith and credit of the U.S. government, such as those issued by the Federal Home Loan Mortgage Corporation ("Freddie Mac"), the Federal National Mortgage Association ("Fannie Mae") and the Federal Home Loan Bank System. These entities are, however, supported through federal subsidies, loans or other benefits. The Fund may also invest in government securities that are supported by the full faith and credit of the U.S. government, such as those issued by the Government National Mortgage Association ("Ginnie Mae"). Finally, the Fund may invest in government securities that are issued by entities whose activities are sponsored by the federal government but that have no explicit financial support. Within the money market allocation, the Adviser may invest in money market funds, repurchase agreements or other short-term, high-quality, fixed-income securities issued by banks, corporations and the U.S. government.

The Fund may purchase ETFs, or other investment companies, in order to achieve exposure to a specific market sector to achieve exposure to foreign markets, or for other reasons consistent with its investment strategy. The shares of ETFs are listed and traded on stock exchanges at market prices.

For additional information on the Fund's investment strategies, please see the section "More about the Funds' Investment Strategies and Risks" beginning on page 28 of this prospectus.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

The loss of money is a risk of investing in this Fund. Other principal risks of investing in the Fund are below.

*Stock Market Risks:*	The value of equity securities rise and fall. The portfolio of a Fund investing in equity securities will reflect changes in prices of individual stocks held in the Fund's portfolio. Consequently, the Fund's share price may decline.
*Risks Related to Investing For Growth:*	Growth stocks depend more on price changes for returns and may be more adversely affected in a down market compared to value stocks.
*Risks Related to Investing For Value:*	Value stocks depend less on price changes for returns and may lag behind growth stocks in an up market.
*Risks Related to Company Size:*	The smaller the capitalization of a company, the less liquid its stock and the more volatile its price.
*Credit Risks:*	The possibility that an issuer will default on a security by failing to pay interest or principal when due.
*Interest Rate Risks:*	Prices of fixed-income securities rise and fall in response to changes in interest rates. Generally, when interest rates rise, prices of fixed-income securities fall. The opposite is true when interest rates decline. Interest rate changes have a greater effect on the price of fixed-income securities with longer durations. Duration measures the price sensitivity of a fixed-income security to changes in interest rates.
*Risk Related to Complex CMOs:*	CMOs with complex or highly variable prepayment terms generally entail greater market, prepayment and liquidity risks.
*Call Risks:*	An issuer may redeem a fixed-income security before maturity at a price below its current market price.
*Prepayment Risks:*	The relative volatility of mortgage backed securities is due to the likelihood of prepayments which increase in a declining interest rate environment and decrease in a rising interest rate environment.
*Currency Risks:*	Exchange rates for currencies fluctuate daily.
*Liquidity Risks:*	A Fund may not be able to sell a security or close out of an investment when it wants. Liquidity risk may make it more difficult to sell or buy a security at a favorable price or time.
*Sector Risks:*	Certain market sectors may underperform other sectors or the market as a whole.
*Risks of Foreign Investing:*	Political, social, currency-rate fluctuations and economic instability within foreign countries may cause the value of the Fund's foreign investments to decline.
*Risks of Emerging Markets:*	Investments in emerging markets are subject to all the risks associated with foreign investing; however, these risks may be magnified in emerging markets. Emerging market countries may have relatively unstable governments and may present the risk of nationalization of businesses, expropriation, confiscatory taxation or, in certain instances, reversion to closed market, centrally planned economies. Generally, countries are considered emerging markets if they are included in any one of the MSCI emerging markets indices.
*Exchange-Traded Funds Risks:*	ETFs may be subject to the following risks that do not apply to conventional mutual funds: » the market price of an ETF's shares may trade above or below their net asset value; » an active trading market for an ETF's shares may not develop or be maintained; or » trading of an ETF's shares may be halted if the listing exchange's officials deem such action appropriate. Investing in ETFs may result in higher fees and expenses for a Fund, because the Fund and its shareholders will bear a pro rata portion of the ETF's fees and expenses.
*Risks of Investing in ADRs and Domestically Traded Securities of Foreign Issuers:*	Because the Fund may invest in ADRs and other domestically traded securities of foreign companies, the Fund's share price may be more affected by foreign economic and political conditions, taxation policies and accounting and auditing standards than would otherwise be the case.
*Risks of Investing in Derivative Contracts and Hybrid Instruments*	The Funds' exposure to derivative contracts and hybrid instruments, either directly or indirectly through another investment company, may involve risks different from or possibly greater than the risk associated with investing directly in a security instead of the derivative. Risks include: 1) the value of the derivative may not correlate with the value of the underlying security or may correlate inversely; 2) any potential risk reduction may be offset with gain limitations; 3) derivatives may be difficult to price, thus involving additional payments by the Funds; 4) possible adverse tax consequences; and 5) other risks, such as but not limited to, stock market, interest rate, credit, currency, liquidity, and leverage risks.
*Manager Risk:*	The Fund is actively managed and the investment techniques and security selection used by the Fund's managers may not produce the desired results and may cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.
*Risks of Investing in Real Estate Investment Trusts (REITs)*	Investments in REITs are subject to many of the same risks as direct investments in real estate. Generally, a REIT's performance depends on the types and locations of the properties it owns and on how well the REIT manages its properties. The value of a REIT may also be affected by changes in interest rates. Rising interest rates could cause the value of an equity REIT to decline. Additionally, a REIT may fail to qualify for tax-exempt status under the IRC.

An investment in the Fund is not a deposit of any bank, including WesBanco Bank, Inc., and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other government agency.

For more information regarding the risks of investing in the Fund, please see the section "More About the Funds' Investment Strategies and Risks" beginning on page 28 of this prospectus.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank, including WesBanco Bank, Inc., and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other government agency.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The performance information shown below will help you analyze the Fund's investment risks in light of its historical returns. The Risk/Return Bar Chart shows the variability of the Fund's total returns on a calendar year-by-year basis and provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year. The Average Annual Total Return Table shows returns averaged over the stated periods and shows how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results. Updated performance information is available at www.wesmarkfunds.com or by calling 1-800-864-1013.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-800-864-1013

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Within the periods shown in the bar chart, the Fund's highest quarterly return was 9.52% (quarter ended 9/30/2010). Its lowest quarterly return was -7.40% (quarter ended 12/31/2018).

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any applicable state and local taxes.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Return After Taxes is shown to illustrate the effect of federal taxes on Fund returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any applicable 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 IRAs.

For the periods ended December 31, 2019:

WesMark Balanced Fund

Trading Symbol

dei_TradingSymbol

WMBLX

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.25%

One Year

rr_ExpenseExampleYear01

$ 127

Five Years

rr_ExpenseExampleYear05

686

2010

rr_AnnualReturn2010

11.90%

2012

rr_AnnualReturn2012

8.44%

2014

rr_AnnualReturn2014

7.50%

2016

rr_AnnualReturn2016

9.68%

2018

rr_AnnualReturn2018

(4.58%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.52%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2018

1 Year

rr_AverageAnnualReturnYear01

20.30%

10 Years

rr_AverageAnnualReturnYear10

7.85%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

5.12%

1 Year

rr_AverageAnnualReturnYear01

13.17%

10 Years

rr_AverageAnnualReturnYear10

6.22%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

11.70%

1 Year

rr_AverageAnnualReturnYear01

6.80%

10 Years

rr_AverageAnnualReturnYear10

3.05%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

8.17%

1 Year

rr_AverageAnnualReturnYear01

18.65%

10 Years

rr_AverageAnnualReturnYear10

7.53%

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES OF THE FUND

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 [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 37% of the average value of its portfolio.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies of the Fund

Risk [Heading]

rr_RiskHeading

Principal Risks of Investing in the Fund

Risk Lose Money [Text]

rr_RiskLoseMoney

The loss of money is a risk of investing in this Fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The Risk/Return Bar Chart shows the variability of the Fund's total returns on a calendar year-by-year basis and provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.wesmarkfunds.com

Bar Chart [Heading]

rr_BarChartHeading

Risk/Return Bar Chart For the periods ended December 31:

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Return Table

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 IRAs.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The information provided for LIGFA and LGUS represents the average of the total returns reported by mutual funds designated by Lipper, Inc. as falling into the respective category indicated. Lipper averages do not reflect sales charges.

Prospectus [Line Items]

rr_ProspectusLineItems

Management Fees

rr_ManagementFeesOverAssets

0.60%

Shareholder Services Fee

rr_Component1OtherExpensesOverAssets

0.25%

^[1]

Total Annual Fund Operating Expenses

rr_NetExpensesOverAssets

1.01%

Three Years

rr_ExpenseExampleYear03

321

Ten Years

rr_ExpenseExampleYear10

$ 1,235

2011

rr_AnnualReturn2011

4.71%

2013

rr_AnnualReturn2013

(3.53%)

2015

rr_AnnualReturn2015

0.81%

2017

rr_AnnualReturn2017

1.20%

2019

rr_AnnualReturn2019

4.75%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(2.72%)

5 Years

rr_AverageAnnualReturnYear05

1.73%

1 Year

rr_AverageAnnualReturnYear01

3.86%

10 Years

rr_AverageAnnualReturnYear10

1.14%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

0.96%

1 Year

rr_AverageAnnualReturnYear01

6.80%

10 Years

rr_AverageAnnualReturnYear10

3.05%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

1.80%

1 Year

rr_AverageAnnualReturnYear01

6.30%

10 Years

rr_AverageAnnualReturnYear10

2.82%

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES OF THE FUND

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 [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 9% of the average value of its portfolio.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies of the Fund

Risk [Heading]

rr_RiskHeading

Principal Risks of Investing in the Fund

Risk Lose Money [Text]

rr_RiskLoseMoney

The loss of money is a risk of investing in this Fund.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

Compared to diversified mutual funds, a non-diversified fund may invest a higher percentage of its assets among fewer issuers of portfolio securities. This increases the Fund's risk by magnifying the impact (positively or negatively) that any one issuer has on the Fund's share price and performance.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The performance information shown below will help you analyze the Fund's investment risks in light of its historical returns. The Risk/Return Bar Chart shows the variability of the Fund's total returns on a calendar year-by-year basis and provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year. The Average Annual Total Return Table shows returns averaged over the stated periods and shows how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results. Updated performance information is available at www.wesmarkfunds.com or by calling 1-800-864-1013.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-800-864-1013

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Within the periods shown in the bar chart, the Fund's highest quarterly return was 2.53% (quarter ended 3/31/2014). Its lowest quarterly return was -2.75% (quarter ended 6/30/2013).

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Return After Taxes is shown to illustrate the effect of federal taxes on Fund 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'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 IRAs.

For the periods ended December 31, 2019:

WesMark West Virginia Municipal Bond Fund

Trading Symbol

dei_TradingSymbol

WMKMX

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.23%

One Year

rr_ExpenseExampleYear01

$ 110

Five Years

rr_ExpenseExampleYear05

595

2010

rr_AnnualReturn2010

1.94%

2012

rr_AnnualReturn2012

4.53%

2014

rr_AnnualReturn2014

6.87%

2016

rr_AnnualReturn2016

0.06%

2018

rr_AnnualReturn2018

0.47%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

2.53%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2013

1 Year

rr_AverageAnnualReturnYear01

4.83%

10 Years

rr_AverageAnnualReturnYear10

2.93%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

2.24%

1 Year

rr_AverageAnnualReturnYear01

3.66%

10 Years

rr_AverageAnnualReturnYear10

2.82%

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

2.44%

1 Year

rr_AverageAnnualReturnYear01

6.46%

10 Years

rr_AverageAnnualReturnYear10

3.40%

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

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, Rate

rr_PortfolioTurnoverRate

152.00%

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

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. 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 and returns may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund pursues its investment objective by utilizing a tactical allocation strategy. The Fund primarily invests in a mix of equity and fixed income securities, and may also invest in commodity related investments. While the Adviser has wide latitude to adjust the equity and fixed income allocations of the Fund, it is expected that during normal market conditions that the Fund's allocation to equities or fixed income investments will not exceed 85% of the Fund's assets. Also, in an effort to increase the income of the Fund, the Fund may sell call options on securities held in the Fund. Additionally, the Fund may buy a put option on one or more securities held in the Fund in an effort to protect unrealized gains in such securities, or to protect against downside losses in such securities.

With respect to its investment in equity securities, the Fund may invest in large cap stocks, small- and mid-cap stocks and international equity securities (including emerging market equity securities). With respect to its investment in fixed income securities, the Fund may invest in domestic or foreign securities, corporate or sovereign, and of any quality or duration. The Adviser selects securities with longer or shorter durations based on its assessment of market conditions, but does not target any specific duration for the fixed-income portion of the Fund. Duration measures the price sensitivity of a fixed-income security to changes in interest rates. The Fund may invest in fixed-income securities with any maturity. The Fund anticipates that it will predominately invest in exchange-traded funds (ETFs) in order to achieve exposure to the underlying investments. In selecting ETFs for purchase by a Fund, the Adviser considers the securities index in which the ETF seeks to track, the trading liquidity of the ETF, the securities in which the ETF invests, and whether or not the ETF has obtained relief from the SEC that permits investment companies to invest in ETFs to a greater extent than normally permitted by the 1940 Act. The Fund may also invest in exchange-traded notes ("ETNs"). ETNs are unsecured debt obligations of financial institutions which are traded on exchanges and the returns of which are linked to the performance of market indices. The Fund will generally invest in ETNs which are linked to commodities indices; however, investing in ETNs is not equivalent to investing directly in index components or the relevant index itself, and the Fund would be subject to the credit risk of the financial institution issuing the ETN.

The portfolio management team will determine the Fund's asset allocation mix based upon the Adviser's view of markets, economic cycles, and intermediate-term trends. The Adviser then implements its asset allocation mix by tactically selecting investments based upon a number of different factors, including but not limited to macroeconomic environment, business cycle, equity market fundamentals, and valuation and interest rates. Also, as market changes and fundamentals dictate the Adviser will make modifications to the overall allocations within the Fund.

The Fund may be appropriate for investors with long-term time horizons who are not sensitive to short-term losses and seek to participate in the long-term growth of the financial markets.

The Adviser anticipates investing its cash balance in investments such as money market funds, repurchase agreements, commercial paper and short-term U.S. government agency and/or Treasury securities.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

The loss of money is a risk of investing in this Fund. Other principal risks of investing in the Fund are below.

*Stock Market Risks:*	The value of equity securities rise and fall. The portfolio of a Fund investing in equity securities will reflect changes in prices of individual stocks held in the Fund's portfolio. Consequently, the Fund's share price may decline.
*Risks Related to Investing For Growth:*	Growth stocks depend more on price changes for returns and may be more adversely affected in a down market compared to value stocks.
*Risks Related to Investing For Value:*	Value stocks depend less on price changes for returns and may lag behind growth stocks in an up market.
*Risks Related to Company Size:*	The smaller the capitalization of a company, the less liquid its stock and the more volatile its price.
*Credit Risks:*	The possibility that an issuer will default on a security by failing to pay interest or principal when due.
*Interest Rate Risks:*	Prices of fixed-income securities rise and fall in response to changes in interest rates. Generally, when interest rates rise, prices of fixed-income securities fall. The opposite is true when interest rates decline. Interest rate changes have a greater effect on the price of fixed-income securities with longer durations. Duration measures the price sensitivity of a fixed-income security to changes in interest rates.
*Risk Related to Complex CMOs:*	CMOs with complex or highly variable prepayment terms generally entail greater market, prepayment and liquidity risks.
*Call Risks:*	An issuer may redeem a fixed-income security before maturity at a price below its current market price.
*Prepayment Risks:*	The relative volatility of mortgage backed securities is due to the likelihood of prepayments which increase in a declining interest rate environment and decrease in a rising interest rate environment.
*Currency Risks:*	Exchange rates for currencies fluctuate daily.
*Liquidity Risks:*	A Fund may not be able to sell a security or close out of an investment when it wants. Liquidity risk may make it more difficult to sell or buy a security at a favorable price or time.
*Sector Risks:*	Certain market sectors may underperform other sectors or the market as a whole.
*Risks of Foreign Investing:*	Political, social, currency-rate fluctuations, and economic instability within foreign countries may cause the value of the Fund's foreign investments to decline.
*Risks of Emerging Markets:*	Investments in emerging markets are subject to all the risks associated with foreign investing; however, these risks may be magnified in emerging markets. Emerging market countries may have relatively unstable governments and may present the risk of nationalization of businesses, expropriation, confiscatory taxation or, in certain instances, reversion to closed market, centrally planned economies. Generally, countries are considered emerging markets if they are included in any one of the MSCI emerging markets indices.
*Exchange-Traded Funds Risks:*	ETFs may be subject to the following risks that do not apply to conventional mutual funds: » the market price of an ETF's shares may trade above or below their net asset value; » an active trading market for an ETF's shares may not develop or be maintained; or » trading of an ETF's shares may be halted if the listing exchange's officials deem such action appropriate. Investing in ETFs may result in higher fees and expenses for a Fund, because the Fund and its shareholders will bear a pro rata portion of the ETF's fees and expenses
*Risks of Investing in ADRs and Domestically Traded Securities of Foreign Issuers:*	Because the Fund may invest in ADRs and other domestically traded securities of foreign companies, the Fund's share price may be more affected by foreign economic and political conditions, taxation policies and accounting and auditing standards than would otherwise be the case.
*Commodity Risk:*	Because the Fund may invest in instruments (including ETFs or ETNs) whose performance is linked to the price of an underlying Commodity (including precious metals such as gold) or commodity index, the Fund may be subject to the risks of investing in physical commodities. These types of risks include regulatory, economic and political developments, weather events and natural disasters, pestilence, market disruptions, and the fact that commodity prices may have greater volatility than investments in traditional securities. The Fund's investment in commodities could cause the Fund to fail to qualify as a regulated investment company (RIC) under Subchapter M of the Internal Revenue Code. It is the intent of the Fund to maintain its RIC status, and as such, the Fund will seek to manage its investment in commodities in an effort to continue to qualify as a RIC. However, there are no assurances it will be successful in doing so.
*Manager Risk:*	The Fund is actively managed and the investment techniques and security selection used by the Fund's managers may not produce the desired results and may cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.
*Risks of Investing in Real Estate Investment Trusts (REITs)*	Investments in REITs are subject to many of the same risks as direct investments in real estate. Generally, a REIT's performance depends on the types and locations of the properties it owns and on how well the REIT manages its properties. The value of a REIT may also be affected by changes in interest rates. Rising interest rates could cause the value of an equity REIT to decline. Additionally, a REIT may fail to qualify for tax-exempt status under the IRC.
*Risks of Investing in Derivative Contracts and Hybrid Instruments*	The Funds' exposure to derivative contracts and hybrid instruments, either directly or indirectly, through another investment company, may involve risks different from or possibly greater than the risk associated with investing directly in a security instead of the derivative. Risks include: 1) the value of the derivative may not correlate with the value of the underlying security or may correlate inversely; 2) any potential risk reduction may be offset with gain limitations; 3) derivatives may be difficult to price, thus involving additional payments by the Funds; 4) possible adverse tax consequences; and 5) other risks, such as but not limited to, stock market, interest rate, credit, currency, liquidity, and leverage risks.

An investment in the Fund is not a deposit of any bank, including WesBanco Bank, and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other government agency.

For more information regarding the risks of investing in the Fund, please see the section "More About the Funds' Investment Strategies and Risks" beginning on page 28 of this prospectus.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank, including WesBanco Bank, and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other government agency.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The performance information shown below will help you analyze the Fund's investment risks in light of its historical returns. The Risk/Return Bar Chart shows the variability of the Fund's total returns on a calendar year-by-year basis and provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year. The Average Annual Total Return Table shows returns averaged over the stated periods and shows how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results. Updated performance information is available at www.wesmarkfunds.com or by calling 1-800-864-1013.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-800-864-1013

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Within the periods shown in the bar chart, the Fund's highest quarterly return was 6.78% (quarter ended 3/31/2019). Its lowest quarterly return was -8.31% (quarter ended 12/31/2018).

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical federal marginal income tax rates and do not reflect the impact of any applicable state and local taxes.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Return After Taxes is shown to illustrate the effect of federal taxes on Fund returns. Actual after-tax returns depend on each investor's personal tax situation, and are likely to differ from those shown. After-tax returns are calculated using the highest historical federal marginal income tax rates and do not reflect the impact of any applicable state and local taxes. Actual after tax returns depend on an investors tax situation and may differ from those shown. After-tax returns shown are not relevant to investors holding Fund shares through tax-deferred programs such as a 401(k) plan or an IRA.

For the period ended December 31, 2019:

WesMark Tactical Opportunity Fund