Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

ASTON FUNDS

Prospectus Date

rr_ProspectusDate

Feb. 28, 2015

ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

ASTON/Lake Partners LASSO Alternatives Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks to provide long-term total return with reduced correlation to the conventional stock and bond markets.

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below describes the fee and expenses that you may pay if you buy and hold shares 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)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 29, 2016

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) except that it generally does not incur transaction costs when it buys mutual fund shares. Underlying funds will also incur these costs. 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 45.91%.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

45.91%

Acquired Fund Fees and Expenses, Based on Estimates [Text]

rr_AcquiredFundFeesAndExpensesBasedOnEstimates

Estimated dividend and interest expense on short sales in underlying funds that engage in short selling, based on publicly available information.

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 with the cost of investing in other mutual funds. The example shows the operating expenses you would incur as a shareholder if you invested $10,000 in the Fund over the time periods shown and you redeem all your shares at the end of those periods. The example assumes that the average annual return was 5%, operating expenses remained the same and expenses were capped for one year in each period.

Although your actual costs may be higher or lower, based on the above assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is structured as a fund-of-funds. Under normal circumstances, the Fund pursues its investment objective by investing primarily in a managed portfolio of other open-end investment companies registered under the Investment Company Act of 1940, as amended (the “1940 Act”), that use alternative or hedging strategies (“Alternative Mutual Funds”). The Fund may also invest in closed-end funds, exchange-traded funds (“ETFs”) and exchange-traded notes (“ETNs”), which provide exposure to hedging or alternative investment strategies. Under normal circumstances, the Fund will invest at least 80% of its assets in Alternative Mutual Funds and other investments with exposure to hedging or alternative investment strategies. The Fund’s strategy is implemented by the subadviser using its proprietary LASSO Long and Short Strategic Opportunities strategy. The LASSO strategy is intended to produce long-term total returns with less volatility than the overall stock market and reduced correlation to conventional asset classes, across a variety of market climates.

Hedging strategies used by underlying funds to mitigate risk include the use of short selling, options, futures, derivatives or similar instruments. Alternative investment strategies include: long/short equity; long/short credit and fixed income; market neutral and arbitrage strategies; global macro strategies; commodities or commodity-linked investments; currencies; leverage; derivatives for hedging and return purposes; illiquid, private placement or distressed securities; and other investments and investment techniques that are expected to have reduced correlation with major market indices. The Fund generally seeks to maintain net equity exposure ranging from 20% to 50% of assets.

The subadviser employs a top down and bottom up approach to underlying fund selection. Top down analysis includes an assessment of economic trends and market opportunities and an evaluation of strategy dynamics and risks. The bottom up portion of the investment process involves both qualitative and quantitative analysis. In selecting underlying funds, the subadviser considers certain criteria, including consistency of performance, on both an absolute and relative basis; changes in volatility and correlations over time; the investment style of an underlying fund including investment process and portfolio characteristics; and the character of underlying fund management and personnel as well as transparency with investors and sound organizational structure. To manage risk, the subadviser monitors volatility and net equity exposure, maintains a diversified portfolio, utilizes a dynamic and flexible allocation process across changing investment environments, and applies judgment to a structured sell discipline.

Risk [Heading]

rr_RiskHeading

PRINCIPAL RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You could lose money by investing in the Fund. There can be no assurance that the Fund’s investment objective will be achieved. The following is a summary of the principal risks of investing in the Fund. The risks discussed below for the underlying funds expose the Fund to the same risks.

Aggressive Investment Technique Risk. Investing in underlying funds that use investment techniques and financial instruments that may be considered aggressive, including the use of futures contracts; options on futures contracts, securities and indices; forward contracts; swap agreements and similar instruments, exposes the Fund to potentially dramatic changes (losses) in the value of certain of its portfolio holdings. Such techniques may include short sales or other techniques that are intended to provide inverse exposure to a particular market or other asset class.

CFTC Regulation Risk. The Fund currently operates in compliance with the exclusion from regulation as a “commodity pool” under the Commodity Exchange Act, as amended (the “CEA”), provided by Commodity Futures Trading Commission (“CFTC”) Rule 4.5. This exclusion significantly limits the use of commodity instruments for purposes other than bona fide hedging purposes. The application of amended Rule 4.5 to “funds-of-funds” remains unclear. If the Fund were no longer able to claim the exclusion provided by Rule 4.5, the Fund would be required to register with the CFTC as a “commodity pool” and would become subject to regulation under the CEA, which could increase the Fund’s expenses, adversely affecting investment returns.

Commodity Risk. Investing in underlying funds that invest long or short in commodities markets and commodity-linked instruments, such as ETNs, may subject the Fund to greater volatility than investments in traditional securities. Commodities include energy, precious and industrial metals, agricultural products, livestock and minerals. Underlying funds may buy certain commodities directly or may invest in commodity-linked instruments. The value of commodities and commodity contracts are affected by a variety of factors, including global supply and demand, changes in interest rates, commodity index volatility, and factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargos, government regulation, tariffs and taxes, world events and economic, political and regulatory developments. The Fund’s ability to invest in underlying funds that invest in commodities markets and its ability to invest in commodity-linked instruments may be significantly limited by the federal income tax rules applicable to regulated investment companies. The Fund’s ability to invest in underlying funds that invest in the commodities markets may also be limited by CEA rules.

Convertible Securities Risk. Underlying funds may invest in convertible securities. Convertible preferred stocks, which are convertible into shares of the issuer’s common stock and pay regular dividends, and convertible bonds, which are convertible into shares of the issuer’s common stock and bear interest, are subject to the risks of equity securities and fixed income securities. The lower the conversion premium, the more likely the price of the convertible security will follow the price of the underlying common stock. Conversely, higher premium convertible securities are more likely to exhibit the behavior of bonds because the likelihood of conversion is lower, which may cause their prices to fall as interest rates rise.

The value of a convertible security is also affected by the credit quality of the issuer and any call provisions. There is the risk that the issuer of convertible preferred stock will not be able to make dividend payments or that the issuer of a convertible bond will not be able to make principal and/or interest payments.

Credit Risk. Credit risk (also called default risk) is the risk that the issuer of a security will not be able to make principal and interest payments on a debt issue on a timely basis or at all, which could result in losses to the underlying funds. The credit ratings of issuers could change and negatively affect the Fund’s share price or yield. When underlying funds use derivative instruments to seek credit exposure to underlying issuers, the underlying funds are subject to the credit risk of both the underlying issuer(s) and the counterparty (typically a broker or bank) to the instrument. When underlying funds invest in asset-backed securities, mortgage-backed securities and collateralized mortgage obligations, the underlying funds are subject to the credit risks of the underlying assets that collateralize the instrument. During periods of instability in the credit markets, delinquencies and credit losses on certain asset-backed and mortgage-backed securities have historically increased.

Currency Risk. The securities held by an underlying fund may be denominated in currencies other than the U.S. dollar, and as a result, may be affected by changes in exchange rates or control regulations. If a local currency gains against the U.S. dollar, the value of a security denominated in that currency increases in U.S. dollar terms. If a local currency declines against the U.S. dollar, the value of the security decreases in U.S. dollar terms.

Derivatives Risk. Underlying funds may engage in derivatives transactions. Risks associated with derivatives may include the risk that the derivative is imperfectly correlated with the security, index or currency to which it relates, the risk that derivatives may not have the intended effects and may result in losses or missed opportunities and the risk that an underlying fund will be unable to sell or otherwise close out the derivative. Derivative transactions could also expose the underlying fund to the effects of leverage, which could increase the underlying fund’s exposure to the market and magnify potential losses. There is no guarantee that derivatives, to the extent employed, will have the intended effect, and their use could cause lower returns or even losses to the underlying fund. The use of derivatives by an underlying fund to hedge risk may reduce the opportunity for gain by offsetting the positive effect of favorable price movements. The use of over-the-counter derivatives subjects the Fund to the risk that the counterparty to the derivative may be unwilling or unable to meet its obligations on the investment. The use of certain derivatives may expose the Fund to the underlying market or other reference asset in an amount exceeding the cash investment of the underlying fund.

Exchange-Traded Note Risk. The returns of ETNs are based on the performance of a specified market index minus applicable fees. The risks of ETNs include the risks that may affect the value of the reference index. The value of an ETN is also subject to the credit risk of the issuer. Thus, the value of an ETN may drop due to a decline in an issuer’s credit quality or a downgrade in the issuer’s credit rating, even if there is no change or an increase in the reference index. ETNs are subject to the additional risk that notes may trade at a premium or discount to their reference indices. There may also not be an active trading market available for some ETNs. Additionally, trading of ETNs may be halted or delisted by the listing exchange. When the Fund invests in an ETN, shareholders of the Fund bear their proportionate share of the ETNs’ fees and expenses as well as their share of the Fund’s fees and expenses.

Fixed Income Risk. Investing in underlying funds that invest long or short in fixed income securities subjects the Fund to additional risks, which include credit risk, interest rate risk, maturity risk, investment grade securities risk, municipal securities risk and prepayment risk. These risks could affect the value of a particular investment by the Fund, possibly causing the Fund’s share price and total return to be reduced and fluctuate more than other types of investments.

Foreign Securities Risk. Investing in underlying funds that invest long or short in securities of foreign issuers involves risks in addition to those typically associated with U.S. investments, including settlement risks, currency fluctuation, foreign tax risks, different financial reporting practices and regulatory standards, high costs of trading, changes in political conditions, expropriation, investment and repatriation restrictions, as well as settlement and custody risks.

Fund-of-Funds Structure Risk. Your cost of investing in the Fund will be higher than the cost of investing directly in the underlying funds because you will bear your proportionate share of both the Fund’s expenses and the expenses of the underlying funds. In addition, costs may be higher than mutual funds that invest directly in stocks and bonds. Furthermore, the Fund may be prevented from fully allocating assets to an underlying fund due to regulatory limitations which may impact a fund-of-funds.

Investment Company Risk. The Fund may invest in securities of other investment companies, including ETFs, open-end funds and closed-end funds. The risks of investing in other investment companies typically reflect the risks of the types of securities in which those investment companies invest. Investments in ETFs and closed-end funds are subject to the additional risk that shares of the fund may trade at a premium or discount to their net asset value per share. When the Fund invests in another investment company, shareholders of the Fund bear their proportionate share of the other investment company’s fees and expenses as well as their share of the Fund’s fees and expenses.

Leveraged ETF Risk. Leveraged ETFs seek to provide returns that are a multiple of a stated benchmark, typically using a combination of derivatives strategies. Like other forms of leverage, leveraged ETFs increase risk exposure relative to the amount invested and can lead to significantly greater losses than a comparable unleveraged portfolio. Because leveraged ETFs typically seek to obtain their objective on a daily basis, holding leveraged ETFs for longer than a day may produce unexpected results particularly when the benchmark index experiences large ups and downs.

Liquidity Risk. Underlying funds may hold less liquid securities, including private placements, Rule 144A securities and thinly traded securities. When there is no willing buyer and a security cannot be readily sold at the desired time or price, an underlying fund may need to accept a lower price or may not be able to sell the security at all. An inability to sell securities, at the underlying fund’s desired price or at all, can adversely affect the fund’s value or prevent the fund from being able to take advantage of other investment opportunities. Less liquid securities are more difficult to dispose of at their recorded values and are subject to wider bid-ask spreads and volatility.

Manager Risk. The performance of the Fund is dependent upon the investment adviser’s skill in selecting managers and the subadviser’s skill in making appropriate investments. As a result, the Fund may underperform its benchmark or its peers.

Market Risk. The Fund’s share price can move down in response to stock market conditions, changes in the economy or changes in a particular underlying fund’s share price. An underlying fund may decline in value even when the values of stocks or bonds in general are rising. Overall financial market risks affect the value of the underlying funds and thus the share price of the Fund. Factors such as domestic, economic growth and market conditions, interest rate levels and political events affect the securities markets.

Non-Diversified Risk. An underlying fund that is non-diversified may invest a larger percentage of its assets in a given security than a diversified fund. As a result, it may be more susceptible to a single adverse economic, political or regulatory occurrence affecting one or more issuers in which a large percentage of its assets is invested and may experience increased volatility due to its investments in those securities.

Short Sales Risk. The underlying funds may sell securities short. Short sales involve the risk that an underlying fund will incur a loss by subsequently buying a security at a higher price than the price at which the fund previously sold the security short. Any loss will be increased by the amount of compensation, dividends or interest the fund must pay to the lender of the security. Because a loss incurred by an underlying fund on a short sale results from increases in the value of the security, losses on a short sale are theoretically unlimited. In addition, the fund may not be able to close out a short position at a particular time or at an acceptable price. A lender may request that borrowed securities be returned on short notice, and the fund may have to buy the securities sold short at an unfavorable price. If this occurs at a time when other short sellers of the same security want to close out their positions, it is more likely that the fund would have to close out its short position at an unfavorable price. If underlying funds take both long and short positions, there is a risk that the value of securities held long might decrease and the value of securities sold short might increase in response to activities of an individual company or general market conditions. In this case, an underlying fund’s potential losses could exceed those of mutual funds that hold only long positions.

Risk Lose Money [Text]

rr_RiskLoseMoney

You could lose money by investing in the Fund.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

Non-Diversified Risk. An underlying fund that is non-diversified may invest a larger percentage of its assets in a given security than a diversified fund. As a result, it may be more susceptible to a single adverse economic, political or regulatory occurrence affecting one or more issuers in which a large percentage of its assets is invested and may experience increased volatility due to its investments in those securities.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

FUND PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart shows how the performance of the Class I shares of the Fund has varied from year to year over the periods shown. Class I shares and Class N shares are invested in the same portfolio of securities, so the annual returns would differ only to the extent that the classes have different expenses. The annual returns of the Class N shares would be lower than the returns of the Class I shares due to 12b-1 fees paid by Class N shares. This information may help illustrate the risks of investing in the Fund. The Fund makes updated performance information available on the Fund’s website, www.astonfunds.com, or by calling toll-free 800-992-8151. As with all mutual funds, past performance (before and after taxes) does not guarantee future performance.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart shows how the performance of the Class I shares of the Fund has varied from year to year over the periods shown.

The following table indicates how the Fund’s average annual returns for different calendar periods compared to the returns of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800-992-8151

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.astonfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) does not guarantee future performance.

Bar Chart [Heading]

rr_BarChartHeading

Class I Shares
Calendar Year Total Return

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best quarter:	09/10	5.38	%
Worst quarter:	09/11	(7.25	)%

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
(For the periods ended December 31, 2014)

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 Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Class I shares. After-tax returns for Class N will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some instances, the “Return After Taxes on Distributions and Sales of Fund Shares” may be greater than “Return Before Taxes” because the investor is assumed to be able to use the capital loss of the sale of Fund shares to offset other taxable gains.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table indicates how the Fund’s average annual returns for different calendar periods compared to the returns of a broad-based securities market index.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

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. In some instances, the “Return After Taxes on Distributions and Sales of Fund Shares” may be greater than “Return Before Taxes” because the investor is assumed to be able to use the capital loss of the sale of Fund shares to offset other taxable gains. After-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class I shares. After-tax returns for Class N will vary.

ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND | Class N Shares

Risk/Return:

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Dividend and Interest Expense on Short Sales

af_DividendAndInterestExpenseOnShortSales

0.49%

^[1]

Other Acquired Fund Fees and Expenses

af_OtherAcquiredFundFeesAndExpenses

1.35%

Other Expenses

rr_OtherExpensesOverAssets

0.16%

Total Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

1.84%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

3.25%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.01%)

^[2]

Total Annual Fund Operating Expenses

rr_NetExpensesOverAssets

3.24%

^[2],[3]

1 Year

rr_ExpenseExampleYear01

327

3 Years

rr_ExpenseExampleYear03

1,000

5 Years

rr_ExpenseExampleYear05

1,697

10 Years

rr_ExpenseExampleYear10

3,548

1 Year

rr_AverageAnnualReturnYear01

1.20%

5 Years

rr_AverageAnnualReturnYear05

Since Inception

rr_AverageAnnualReturnSinceInception

4.65%

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 03, 2010

ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND | Class I Shares

Risk/Return:

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Dividend and Interest Expense on Short Sales

af_DividendAndInterestExpenseOnShortSales

0.49%

^[1]

Other Acquired Fund Fees and Expenses

af_OtherAcquiredFundFeesAndExpenses

1.35%

Other Expenses

rr_OtherExpensesOverAssets

0.16%

Total Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

1.84%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

3.00%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.01%)

^[2]

Total Annual Fund Operating Expenses

rr_NetExpensesOverAssets

2.99%

^[2],[3]

1 Year

rr_ExpenseExampleYear01

302

3 Years

rr_ExpenseExampleYear03

926

5 Years

rr_ExpenseExampleYear05

1,576

10 Years

rr_ExpenseExampleYear10

3,317

2010

rr_AnnualReturn2010

8.79%

2011

rr_AnnualReturn2011

(1.60%)

2012

rr_AnnualReturn2012

7.49%

2013

rr_AnnualReturn2013

9.07%

2014

rr_AnnualReturn2014

1.45%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2010

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

5.38%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(7.25%)

1 Year

rr_AverageAnnualReturnYear01

1.45%

5 Years

rr_AverageAnnualReturnYear05

4.95%

Since Inception

rr_AverageAnnualReturnSinceInception

6.85%

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 01, 2009

ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND | Return After Taxes on Distributions | Class I Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.50%

5 Years

rr_AverageAnnualReturnYear05

4.39%

Since Inception

rr_AverageAnnualReturnSinceInception

6.29%

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 01, 2009

ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND | Return After Taxes on Distributions and Sale of Fund Shares | Class I Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.60%

5 Years

rr_AverageAnnualReturnYear05

3.75%

Since Inception

rr_AverageAnnualReturnSinceInception

5.28%

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 01, 2009

ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND | HFRX Equity Hedge Index (Reflects no deduction for taxes, expenses or fees. Index return for Class N shares, since inception, from February 28, 2010, is 1.01%). | Class N Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.42%

5 Years

rr_AverageAnnualReturnYear05

0.81%

Since Inception

rr_AverageAnnualReturnSinceInception

1.01%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 28, 2010

ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND | HFRX Equity Hedge Index (Reflects no deduction for taxes, expenses or fees. Index return for Class N shares, since inception, from February 28, 2010, is 1.01%). | Class I Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.42%

5 Years

rr_AverageAnnualReturnYear05

0.81%

Since Inception

rr_AverageAnnualReturnSinceInception

2.63%

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 01, 2009

[1] Estimated dividend and interest expense on short sales in underlying funds that engage in short selling, based on publicly available information.

[2] The investment adviser is contractually obligated to waive management fees and/or reimburse ordinary expenses, not including investment-related costs (such as brokerage commissions), interest, taxes, extraordinary expenses and acquired fund fees and expenses, through February 29, 2016, to the extent that operating expenses exceed 1.40% of the Fund’s average daily net assets with respect to Class N shares and 1.15% of the Fund’s average daily net assets with respect to Class I shares. Prior to February 29, 2016 the arrangement may be amended or terminated for a class only by a vote of the Board of Trustees of Aston Funds.

[3] After Fee Waiver and/or Expense Reimbursement