Prospectus: Risk/Return: Document Type Document Period End Date Registrant Name Central Index Key Amendment Flag Amendment Description Trading Symbol Document Creation Date Document Effective Date Prospectus Date Document [Axis] Prospectus Performance Measure [Axis] Before Taxes After Taxes on Distributions Return After Taxes on Distributions After Taxes on Distributions and Sales Return After Taxes on Distributions and Sale of Fund Shares Series [Axis] Series S000001114 [Member] ASTON/MONTAG & CALDWELL GROWTH FUND ASTON/MONTAG & CALDWELL GROWTH FUND Member Share Class [Axis] Share Classes C000003010 [Member] Class I Shares CLASS I SHARES,ASTON/MONTAG & CALDWELL GROWTH FUND Member C000003009 [Member] Class N Shares CLASS N SHARES,ASTON/MONTAG & CALDWELL GROWTH FUND Member C000003011 [Member] Class R Shares CLASS R SHARES,ASTON/MONTAG & CALDWELL GROWTH FUND Member Risk/Return [Heading] Objective [Heading] Objective, Primary [Text Block] Objective, Secondary [Text Block] Expense [Heading] Expense Narrative [Text Block] Shareholder Fees Caption [Text] Shareholder Fees [Table] Operating Expenses Caption [Text] Annual Fund Operating Expenses [Table] Expense Footnotes [Text Block] Expenses Deferred Charges [Text Block] Expenses Range of Exchange Fees [Text Block] Expense Example [Heading] Expense Example by Year [Heading] Expense Example Narrative [Text Block] Expense Example by, Year, Caption [Text] Expense Example, With Redemption [Table] Expense Example, No Redemption Narrative [Text Block] Expense Example, No Redemption, By Year, Caption [Text] Expense Example, No Redemption [Table] Expense Example Footnotes [Text Block] Expense Example Closing [Text Block] Portfolio Turnover [Heading] Portfolio Turnover [Text Block] Strategy [Heading] Strategy Narrative [Text Block] Risk [Heading] Risk Narrative [Text Block] Risk Footnotes [Text Block] Risk Closing [Text Block] Bar Chart and Performance Table [Heading] Performance Narrative [Text Block] Bar Chart Narrative [Text Block] Bar Chart [Heading] Bar Chart [Table] Bar Chart Footnotes [Text Block] Bar Chart Closing [Text Block] Performance Table Narrative Performance Table Heading Performance [Table] Market Index Performance [Table] Performance Table Footnotes Performance Table Closing [Text Block] Shareholder Fees: Shareholder Fees Column [Text] Maximum Cumulative Sales Charge (as a percentage of Offering Price) Maximum Cumulative Sales Charge (as a percentage) Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) Maximum Deferred Sales Charge (as a percentage of Offering Price) Maximum Deferred Sales Charge (as a percentage) Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee (on shares held less than 90 days, as a percentage of amount redeemed) Redemption Fee Redemption Fee Exchange Fee (as a percentage of Amount Redeemed) Exchange Fee Maximum Account Fee (as a percentage of Assets) Maximum Account Fee Shareholder Fee, Other Net Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses Total Annual Fund Operating Expenses Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses Total Annual Fund Operating Expenses Management Fees (as a percentage of Assets) Management Fees Distribution and Service (12b-1) Fees Distribution and Service (12b-1) Fees Other Expenses (as a percentage of Assets): Other Expenses Total Other Expenses Total Other Expenses Component1 Other Expenses Other Operating Expenses Component2 Other Expenses Dividend and Interest Expense on Short Sales Acquired Fund Fees and Expenses Acquired Fund Fees and Expenses Total Acquired Fund Fees and Expenses Total Acquired Fund Fees and Expenses Fee Waiver or Reimbursement Fee Waiver and/or Expense Reimbursement Fee Waiver and Expense Reimbursement Distribution or Similar (Non 12b-1) Fees Component3 Other Expenses Other Acquired Fund Fees and Expenses Operating Expenses: Operating Expenses Column [Text] Expense Example: 1 Year Expense Example, with Redemption, 1 Year 3 Years Expense Example, with Redemption, 3 Years 5 Years Expense Example, with Redemption, 5 Years 10 Years Expense Example, with Redemption, 10 Years Expense Example, By Year, Column [Text] Column Expense Example, No Redemption: Expense Example, No Redemption, By Year, Column [Text] Column Expense Example, No Redemption, 1 Year 1 Year Expense Example, No Redemption, 3 Years 3 Years Expense Example, No Redemption, 5 Years 5 Years Expense Example, No Redemption, 10 Years 10 Years Bar Chart Table: Annual Return Caption [Text] Caption Annual Return, Column [Text] Column Annual Return, Inception Date Inception Date Annual Return 1990 Annual Return 1991 Annual Return 1992 Annual Return 1993 Annual Return 1994 Annual Return 1995 Annual Return 1996 Annual Return 1997 Annual Return 1998 Annual Return 1999 Annual Return 2000 Annual Return 2001 Annual Return 2002 Annual Return 2003 Annual Return 2004 Annual Return 2005 2005 Annual Return 2006 2006 Annual Return 2007 2007 Annual Return 2008 2008 Annual Return 2009 2009 Annual Return 2010 2010 Annual Return 2011 2011 Annual Return 2012 2012 Annual Return 2013 2013 Annual Return 2014 2014 Annual Return 2015 Annual Return 2016 Annual Return 2017 Annual Return 2018 Annual Return 2019 Annual Return 2020 Russell 1000 Growth Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 1994. Index return for Class I shares, since inception, computed from June 30, 1996, is 7.29%. Index return for Class R shares, since inception, computed from December 31, 2002, is 9.94%.). Russell Thousand Growth Index [Member] Russell 1000 Growth Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 1994. Index return for Class I shares, since inception, computed from June 30, 1996, is 7.29%. Index return for Class R shares, since inception, computed from December 31, 2002, is 9.94%.) Average Annual Return: 1 Year 1 Year 5 Years 5 Years 10 Years 10 Years Since Inception Since Inception Inception Date Inception Date Label Risk/Return Detail [Table] Russell 1000 Growth Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 1994. Index return for Class I shares, since inception, computed from June 30, 1996, is 7.29%. Index return for Class R shares, since inception, computed from December 31, 2002, is 9.94%.). Russell Thousand Growth Indexes [Member] Russell 1000 Growth Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 1994. Index return for Class I shares, since inception, computed from June 30, 1996, is 7.29%. Index return for Class R shares, since inception, computed from December 31, 2002, is 9.94%.) Fee Waiver or Reimbursement over Assets, Date of Termination Portfolio Turnover, Rate Expense Breakpoint Discounts [Text] Expense Breakpoint, Minimum Investment Required [Amount] Expense Exchange Traded Fund Commissions [Text] Expenses Represent Both Master and Feeder [Text] Expenses Explanation of Nonrecurring Account Fee [Text] Other Expenses, New Fund, Based on Estimates [Text] Acquired Fund Fees and Expenses, Based on Estimates [Text] Expenses Other Expenses Had Extraordinary Expenses Been Included [Text] Expenses Restated to Reflect Current [Text] Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Strategy Portfolio Concentration [Text] Risk Lose Money [Text] Risk Nondiversified Status [Text] Risk Money Market Fund [Text] Risk Not Insured Depository Institution [Text] Risk Caption Risk Column [Text] Risk [Text] Performance Information Illustrates Variability of Returns [Text] Performance One Year or Less [Text] Performance Additional Market Index [Text] Performance Availability Phone [Text] Performance Availability Website Address [Text] Performance Past Does Not Indicate Future [Text] Bar Chart Does Not Reflect Sales Loads [Text] Bar Chart, Reason Selected Class Different from Immediately Preceding Period [Text] Bar Chart, Returns for Class Not Offered in Prospectus [Text] Year to Date Return, Label Bar Chart, Year to Date Return, Date Bar Chart, Year to Date Return Highest Quarterly Return, Label Label Highest Quarterly Return, Date Highest Quarterly Return Lowest Quarterly Return, Label Label Lowest Quarterly Return, Date Lowest Quarterly Return Performance Table Does Reflect Sales Loads Performance Table Market Index Changed Index No Deduction for Fees, Expenses, Taxes [Text] Performance Table Uses Highest Federal Rate Performance Table Not Relevant to Tax Deferred Performance Table One Class of after Tax Shown [Text] Performance Table Explanation after Tax Higher Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text] Caption Column Money Market Seven Day Yield, Caption [Text] Money Market Seven Day Yield Column [Text] Money Market Seven Day Yield Phone Money Market Seven Day Yield Money Market Seven Day Tax Equivalent Yield Thirty Day Yield Caption Thirty Day Yield Column [Text] Thirty Day Yield Phone Thirty Day Yield Thirty Day Tax Equivalent Yield S000028305 [Member] ASTON/HERNDON LARGE CAP VALUE FUND ASTON/HERNDON LARGE CAP VALUE FUND Member C000098184 [Member] Class I Shares CLASS I SHARES,ASTON/HERNDON LARGE CAP VALUE FUND Member C000086480 [Member] Class N Shares CLASS N SHARES,ASTON/HERNDON LARGE CAP VALUE FUND Member Russell 1000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from March 31, 2010. Index return for Class I shares, since inception, computed from February 28, 2011, is 14.36%.). Russell Thousand Value Index [Member] Russell 1000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from March 31, 2010. Index return for Class I shares, since inception, computed from February 28, 2011, is 14.36%.) Russell 1000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 1992. Index return for Class I shares, since inception, computed from September 30, 2005, is 7.27%.) Russell 1000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from March 31, 2010. Index return for Class I shares, since inception, computed from February 28, 2011, is 14.36%.). Russell One Thousand Value Indexes [Member] Russell 1000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from March 31, 2010. Index return for Class I shares, since inception, computed from February 28, 2011, is 14.36%.) S000001119 [Member] ASTON/CORNERSTONE LARGE CAP VALUE FUND ASTON/CORNERSTONE LARGE CAP VALUE FUND Member C000003019 [Member] Class I Shares CLASS I SHARES,ASTON/CORNERSTONE LARGE CAP VALUE FUND Member C000003018 [Member] Class N Shares CLASS N SHARES,ASTON/CORNERSTONE LARGE CAP VALUE FUND Member Russell 1000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 1992. Index return for Class I shares, since inception, computed from September 30, 2005, is 7.27%.). Russell One Thousands Value Indexes [Member] Russell 1000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 1992. Index return for Class I shares, since inception, computed from September 30, 2005, is 7.27%.) S000001116 [Member] ASTON/TAMRO DIVERSIFIED EQUITY FUND ASTON/TAMRO DIVERSIFIED EQUITY FUND Member C000003014 [Member] Class N Shares CLASS N SHARES,ASTON/TAMRO DIVERSIFIED EQUITY FUND Member C000111510 [Member] Class I Shares CLASS I SHARES,ASTON/TAMRO DIVERSIFIED EQUITY FUND Member Russell 1000 Index (Reflects no deduction for taxes, expenses or fees, Index return for Class I Shares, since inception, computed from February 29, 2012, is 17.91%.). Russell Thousand Index [Member] Russell 1000 Index (Reflects no deduction for taxes, expenses or fees, Index return for Class I Shares, since inception, computed from February 29, 2012, is 17.91%.) Russell 1000 Index (Reflects no deduction for taxes, expenses or fees, Index return for Class I Shares, since inception, computed from February 29, 2012, is 17.91%.). Russell Thousand Indexes [Member] Russell 1000 Index (Reflects no deduction for taxes, expenses or fees, Index return for Class I Shares, since inception, computed from February 29, 2012, is 17.91%.) S000001129 [Member] ASTON/RIVER ROAD DIVIDEND ALL CAP VALUE FUND ASTON/RIVER ROAD DIVIDEND ALL CAP VALUE FUND Member C000050291 [Member] Class I Shares CLASS I SHARES,ASTON/RIVER ROAD DIVIDEND ALL CAP VALUE FUND Member C000003037 [Member] Class N Shares CLASS N SHARES,ASTON/RIVER ROAD DIVIDEND ALL CAP VALUE FUND Member Russell 3000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from June 30, 2005. Index return for Class I shares, since inception, computed from June 30, 2007, is 5.13%.). Russell Three Thousand Value Index [Member] Russell 3000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from June 30, 2005. Index return for Class I shares, since inception, computed from June 30, 2007, is 5.13%.) Russell 3000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N and Class I shares is computed from June 30, 2012.) Russell 3000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from June 30, 2005. Index return for Class I shares, since inception, computed from June 30, 2007, is 5.13%.). Russell Three Thousands Value Indexes [Member] Russell 3000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from June 30, 2005. Index return for Class I shares, since inception, computed from June 30, 2007, is 5.13%.) S000037439 [Member] ASTON/RIVER ROAD DIVIDEND ALL CAP VALUE FUND II ASTON/RIVER ROAD DIVIDEND ALL CAP VALUE FUND II Member C000115585 [Member] Class I Shares CLASS I SHARES,ASTON/RIVER ROAD DIVIDEND ALL CAP VALUE FUND II Member C000115584 [Member] Class N Shares CLASS N SHARES,ASTON/RIVER ROAD DIVIDEND ALL CAP VALUE FUND II Member S000001125 [Member] ASTON/FAIRPOINTE MID CAP FUND ASTON/FAIRPOINTE MID CAP FUND Member C000003030 [Member] Class I Shares CLASS I SHARES,ASTON/FAIRPOINTE MID CAP FUND Member C000003029 [Member] Class N Shares CLASS N SHARES,ASTON/FAIRPOINTE MID CAP FUND Member Five Years Member Five Years Member Five Years Member Five Years Member Ten Years Member Ten Years Member Ten Years Member Ten Years Member Since Inception Member Since Inception Member Since Inception Member Since Inception Member Aston Fairpointe Mid Cap Fund One Year Member Aston Fairpointe Mid Cap Fund One Year Member S&P MidCap 400 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from September 30, 1994. Index return for Class I shares, since inception, computed from June 30, 2004, is 10.20%.) Sandp Midcap Four Hundred Index [Member] S&P MidCap 400 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from September 30, 1994. Index return for Class I shares, since inception, computed from June 30, 2004, is 10.20%.) S&P MidCap 400 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from September 30, 1994. Index return for Class I shares, since inception, computed from June 30, 2004, is 10.20%.). Sand P Mid Cap Four Hundred Indexes [Member] S&P MidCap 400 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from September 30, 1994. Index return for Class I shares, since inception, computed from June 30, 2004, is 10.20%.) S000019445 [Member] ASTON/MONTAG & CALDWELL MID CAP GROWTH FUND ASTON/MONTAG & CALDWELL MID CAP GROWTH FUND Member C000141652 [Member] Class I Shares CLASS I SHARES,ASTON/MONTAG & CALDWELL MID CAP GROWTH FUND Member C000054065 [Member] Class N Shares CLASS N SHARES,ASTON/MONTAG & CALDWELL MID CAP GROWTH FUND Member Aston Montag And Caldwell Mid Cap Growth Fund A One Year Member Aston Montag And Caldwell Mid Cap Growth Fund A One Year Member Russell Midcap Growth Index (Reflects no deduction for taxes, expenses or fees. Index return since inception is computed from October 31, 2007.). Russell Midcap Growth Index [Member] Russell Midcap Growth Index (Reflects no deduction for taxes, expenses or fees. Index return since inception is computed from October 31, 2007.) S000001115 [Member] ASTON/TAMRO SMALL CAP FUND ASTON/TAMRO SMALL CAP FUND Member C000003013 [Member] Class I Shares CLASS I SHARES,ASTON/TAMRO SMALL CAP FUND Member C000003012 [Member] Class N Shares CLASS N SHARES,ASTON/TAMRO SMALL CAP FUND Member Aston Tamro Small Cap Fund One Year Member Aston Tamro Small Cap Fund One Year Member Russell 2000 Index (Reflects no deduction for taxes, expenses or fees. Index return for Class I shares, since inception, computed from December 31, 2004, is 7.77%.). Russell Two Thousand Index [Member] Russell 2000 Index (Reflects no deduction for taxes, expenses or fees. Index return for Class I shares, since inception, computed from December 31, 2004, is 7.77%.) S000016733 [Member] ASTON/RIVER ROAD SELECT VALUE FUND ASTON/RIVER ROAD SELECT VALUE FUND Member C000046749 [Member] Class N Shares CLASS N SHARES,ASTON/RIVER ROAD SELECT VALUE FUND Member C000050292 [Member] Class I Shares CLASS I SHARES,ASTON/RIVER ROAD SELECT VALUE FUND Member Aston River Road Select Value Fund One Year Member Aston River Road Select Value Fund One Year Member Russell 2500 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from March 31, 2007. Index return for Class I shares, since inception, computed from June 30, 2007, is 6.10%.) Russell Twothousand Fivehundred Value Index [Member] Russell 2500 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from March 31, 2007. Index return for Class I shares, since inception, computed from June 30, 2007, is 6.10%.) Russell 2000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from March 31, 2007. Index return for Class I shares, since inception, computed from June 30, 2007, is 5.08%.). Russell Twenty Hundred Value Index [Member] Russell 2000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from March 31, 2007. Index return for Class I shares, since inception, computed from June 30, 2007, is 5.08%.) Russell 2000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return for Class I shares, since inception, computed from May 31, 2011, is 11.35%.) S000001130 [Member] ASTON/RIVER ROAD SMALL CAP VALUE FUND ASTON/RIVER ROAD SMALL CAP VALUE FUND Member C000003038 [Member] Class N Shares CLASS N SHARES,ASTON/RIVER ROAD SMALL CAP VALUE FUND Member C000040086 [Member] Class I Shares CLASS I SHARES,ASTON/RIVER ROAD SMALL CAP VALUE FUND Member Aston River Road Small Cap Value Fund One Year Member Aston River Road Small Cap Value Fund One Year Member Russell 2000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from June 30, 2005. Index return for Class I shares, since inception, computed from November 30, 2006, is 5.31%.). Russell Twho Thousnd Value Index [Member] Russell 2000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from June 30, 2005. Index return for Class I shares, since inception, computed from November 30, 2006, is 5.31%.) S000030801 [Member] ASTON/RIVER ROAD INDEPENDENT VALUE FUND ASTON/RIVER ROAD INDEPENDENT VALUE FUND Member C000095458 [Member] Class N Shares CLASS N SHARES,ASTON/RIVER ROAD INDEPENDENT VALUE FUND Member C000101740 [Member] Class I Shares CLASS I SHARES,ASTON/RIVER ROAD INDEPENDENT VALUE FUND Member Aston River Road Independent Value Fund One Year Member Aston River Road Independent Value Fund One Year Member S000030192 [Member] ASTON/LMCG SMALL CAP GROWTH FUND ASTON/LMCG SMALL CAP GROWTH FUND Member C000101741 [Member] Class I Shares CLASS I SHARES,ASTON/LMCG SMALL CAP GROWTH FUND Member C000092914 [Member] Class N Shares CLASS N SHARES,ASTON/LMCG SMALL CAP GROWTH FUND Member Russell 2000 Growth Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 2010. Index return for Class I shares, since inception, computed from May 31, 2011, is 12.34%.). Russell Two Thousand Growth Index [Member] Russell 2000 Growth Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 2010. Index return for Class I shares, since inception, computed from May 31, 2011, is 12.34%.) S000035207 [Member] ASTON/SILVERCREST SMALL CAP FUND ASTON/SILVERCREST SMALL CAP FUND Member C000108309 [Member] Class I Shares CLASS I SHARES,ASTON/SILVERCREST SMALL CAP FUND Member C000108308 [Member] Class N Shares CLASS N SHARES,ASTON/SILVERCREST SMALL CAP FUND Member Russell 2000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N and Class I shares is computed from December 31, 2011.). Russell Two Thousand Value Index [Member] Russell 2000 Value Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N and Class I shares is computed from December 31, 2011.) S000033266 [Member] ASTON/DOUBLELINE CORE PLUS FIXED INCOME FUND ASTON/DOUBLELINE CORE PLUS FIXED INCOME FUND Member C000102287 [Member] Class I Shares CLASS I SHARES,ASTON/DOUBLELINE CORE PLUS FIXED INCOME FUND Member C000102286 [Member] Class N Shares CLASS N SHARES,ASTON/DOUBLELINE CORE PLUS FIXED INCOME FUND Member Barclays U.S. Aggregate Bond Index Barclays Us Aggregate Bond Index [Member] Barclays U.S. Aggregate Bond Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from November 30, 1993. Index return for Class I shares, since inception, is 5.58%.) Barclays U.S. Aggregate Bond Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N and Class I shares is computed from July 31, 2011.) S000001135 [Member] ASTON/TCH FIXED INCOME FUND ASTON/TCH FIXED INCOME FUND Member C000003049 [Member] Class I Shares CLASS I SHARES,ASTON/TCH FIXED INCOME FUND Member C000003048 [Member] Class N Shares CLASS N SHARES,ASTON/TCH FIXED INCOME FUND Member Barclays U.S. Aggregate Bond Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from November 30, 1993. Index return for Class I shares, since inception, is 5.58%.). Barclays U S Aggregate Bond Indexes [Member] Barclays U.S. Aggregate Bond Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from November 30, 1993. Index return for Class I shares, since inception, is 5.58%.) S000025232 [Member] ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND Member C000075197 [Member] Class I Shares CLASS I SHARES,ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND Member C000088830 [Member] Class N Shares CLASS N SHARES,ASTON/LAKE PARTNERS LASSO ALTERNATIVES FUND Member Dividend And Interest Expense On Short Sales. Dividend And Interest Expense On Short Sales Dividend and Interest Expense on Short Sales Other Acquired Fund Fees and Expenses. Other Acquired Fund Fees And Expenses Other Acquired Fund Fees and Expenses HFRX Equity Hedge Index Hfrx Equity Hedge Index [Member] 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%). 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%). Hfrx Equity Hedge Indexes [Member] 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%). S000020470 [Member] ASTON/ANCHOR CAPITAL ENHANCED EQUITY FUND ASTON/ANCHOR CAPITAL ENHANCED EQUITY FUND Member C000088829 [Member] Class I Shares CLASS I SHARES,ASTON/ANCHOR CAPITAL ENHANCED EQUITY FUND Member C000057417 [Member] Class N Shares CLASS N SHARES,ASTON/ANCHOR CAPITAL ENHANCED EQUITY FUND Member Standard & Poo Standard And Poors [Member] Standard & Poor's (S&P) 500 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 2007. Index return for Class I shares, since inception, computed from February 28, 2010 is 16.16%.) Standard & Poor's (S&P) 500 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 2007. Index return for Class I shares, since inception, computed from February 28, 2010, is 16.16%.) Lipper Alternative Long/Short Equity Funds Index Lipper Alternative Long Short Equity Funds Index [Member] Lipper Alternative Long/Short Equity Funds Index (Reflects no deduction for taxes expenses or fees. Index return since inception for Class N Shares, since inception, computed from February 28, 2010 is 5.40%.) Lipper Alternative Long/Short Equity Funds Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 2007. Index return for Class I shares, since inception, computed from February 28, 2010, is 5.40%.) Standard & Poor?s (S&P) 500 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 2007. Index return for Class I shares, since inception, computed from February 28, 2010 is 16.16%.). Standard And Poors Sandp Five Hundred Indexes [Member] Standard & Poor's (S&P) 500 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 2007. Index return for Class I shares, since inception, computed from February 28, 2010 is 16.16%.) Lipper Alternative Long/Short Equity Funds Index (Reflects no deduction for taxes expenses or fees. Index return since inception for Class N Shares, since inception, computed from February 28, 2010 is 5.40%.). Lipper Alternative Long Short Equity Funds Indexes [Member] Lipper Alternative Long/Short Equity Funds Index (Reflects no deduction for taxes expenses or fees. Index return since inception for Class N Shares, since inception, computed from February 28, 2010 is 5.40%.) S000030896 [Member] ASTON/RIVER ROAD LONG-SHORT FUND ASTON/RIVER ROAD LONG-SHORT FUND Member C000124491 [Member] Class I Shares CLASS I SHARES,ASTON/RIVER ROAD LONG-SHORT FUND Member C000095864 [Member] Class N Shares CLASS N SHARES,ASTON/RIVER ROAD LONG-SHORT FUND Member Russell 3000 Index. Russell Three Thousand Index [Member] Russell 3000 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from April 30, 2011. Index return since inception for Class I shares is computed from February 28, 2013, is 20.44%.) Russell 3000 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from April 30, 2011. Index return since inception for Class I shares is computed from February 28, 2013, is 20.44%.). Russell Three Thousands Indexes [Member] Russell 3000 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from April 30, 2011. Index return since inception for Class I shares is computed from February 28, 2013, is 20.44%.) S000019442 [Member] ASTON/BARINGS INTERNATIONAL FUND ASTON/BARINGS INTERNATIONAL FUND Member C000088828 [Member] Class N Shares CLASS N SHARES,ASTON/BARINGS INTERNATIONAL FUND Member C000054062 [Member] Class I Shares CLASS I SHARES,ASTON/BARINGS INTERNATIONAL FUND Member MSCI EAFE Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class I shares is computed from October 31, 2007. Index return for Class N shares, since inception, computed from February 28, 2010, is 6.66%). Msci Eafe Index [Member] MSCI EAFE Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class I shares is computed from October 31, 2007. Index return for Class N shares, since inception, computed from February 28, 2010, is 6.66%) MSCI EAFE Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class I shares is computed from October 31, 2007. Index return for Class N shares, since inception, computed from February 28, 2010, is 6.66%). Msci Eafe Indexes [Member] MSCI EAFE Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class I shares is computed from October 31, 2007. Index return for Class N shares, since inception, computed from February 28, 2010, is 6.66%) S000044915 [Member] ASTON/Guardian Capital Global Dividend Fund ASTON/Guardian Capital Global Dividend Fund Member C000139353 [Member] Class N Shares Class N Shares,ASTON/Guardian Capital Global Dividend Fund Member C000139352 [Member] Class I Shares Class I Shares,ASTON/Guardian Capital Global Dividend Fund Member S000040201 [Member] ASTON/LMCG Emerging Markets Fund ASTON/LMCG Emerging Markets Fund Member C000124953 [Member] Class N Shares Class N Shares,ASTON/LMCG Emerging Markets Fund Member C000124954 [Member] Class I Shares Class I Shares,ASTON/LMCG Emerging Markets Fund Member MSCI Emerging Markets Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N and Class I shares is computed from March 31, 2013.). Msci Emerging Markets Index [Member] MSCI Emerging Markets Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N and Class I shares is computed from March 31, 2013.) S000044916 [Member] ASTON/Pictet International Fund ASTON/Pictet International Fund Member C000139354 [Member] Class I Shares Class I Shares,ASTON/Pictet International Fund Member C000139355 [Member] Class N Shares Class N Shares,ASTON/Pictet International Fund Member S000001120 [Member] ASTON/HARRISON STREET REAL ESTATE FUND ASTON/HARRISON STREET REAL ESTATE FUND Member C000003021 [Member] Class I Shares CLASS I SHARES,ASTON/HARRISON STREET REAL ESTATE FUND Member C000003020 [Member] Class N Shares CLASS N SHARES,ASTON/HARRISON STREET REAL ESTATE FUND Member Ftse Nareit All Equity REITs Total Return Index. Ftse Nareit All Equity REITs Total Return Index [Member] FTSE/NAREIT All Equity REITs Total Return Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 1997. Index return for Class I shares, since inception, computed from September 30, 2005, is 7.85%.) FTSE/NAREIT All Equity REITs Total Return Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 1997. Index return for Class I shares, since inception, computed from September 30, 2005, is 7.85%.). Ftse Nareit All Equity Reits Total Return Indexes [Member] FTSE/NAREIT All Equity REITs Total Return Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from December 31, 1997. Index return for Class I shares, since inception, computed from September 30, 2005, is 7.85%.) S000001133 [Member] ASTON/MONTAG & CALDWELL BALANCED FUND ASTON/MONTAG & CALDWELL BALANCED FUND Member C000003045 [Member] Class I Shares CLASS I SHARES,ASTON/MONTAG & CALDWELL BALANCED FUND Member C000003044 [Member] Class N Shares CLASS N SHARES,ASTON/MONTAG & CALDWELL BALANCED FUND Member Sandp Five Hundred Index. Sandp Five Hundred Index [Member] S&P 500 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 1994. Index return for Class I shares, since inception, is 5.22%.) Barclays Us Government Credit Bond Index. Barclays Us Government Credit Bond Index [Member] Barclays U.S. Government Credit Bond Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 1994. Index return for Class I shares, since inception, is 5.27%.) Sixty Percent Sandp Five Hundred Index Fourty Percent Barclays Us Government Credit Bond Index. Sixty Percent Sandp Five Hundred Index Fourty Percent Barclays Us Government Credit Bond Index [Member] 60% S&P 500 Index/40% Barclays U.S. Government Credit Bond Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares is computed from October 31, 1994. Index return for Class I shares, since inception, is 5.57%.) S&P 500 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares are computed from October 31, 1994. Index return for Class I shares, since inception, is 5.22%.). Sandp Five Hundred Indexes [Member] S&P 500 Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares are computed from October 31, 1994. Index return for Class I shares, since inception, is 5.22%.) Barclays U.S. Government Credit Bond Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares are computed from October 31, 1994. Index return for Class I shares, since inception, is 5.27%.). Barclays U S Government Credit Bond Indexes [Member] Barclays U.S. Government Credit Bond Index (Reflects no deduction for taxes, expenses or fees. Index return since inception for Class N shares are computed from October 31, 1994. Index return for Class I shares, since inception, is 5.27%.) 60% S&P 500 Index/40% Barclays U.S. Government Credit Bond Index (Reflects no deduction for taxes, expenses or fees. Index shares are computed from October 31, 1994. Index return for Class I shares, since inception, is 5.57%.). Sixty Percent Sandp Five Hundred Index Fourty Percent Barclays Us Government Credit Bond Indexes [Member] 60% S&P 500 Index/40% Barclays U.S. Government Credit Bond Index (Reflects no deduction for taxes, expenses or fees. Index shares are computed from October 31, 1994. Index return for Class I shares, since inception, is 5.57%.)