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 and Sales Return After Taxes on Distributions and Sale of Fund Shares After Taxes on Distributions Return After Taxes on Distributions Series [Axis] Series S000005058 [Member] ICON Bond Fund ICON Bond Fund Member Share Class [Axis] Share Classes C000094043 [Member] Class A Class A,ICON Bond Fund Member C000013836 [Member] Class C Class C,ICON Bond Fund Member C000013835 [Member] Class I Class I,ICON Bond Fund Member C000013837 [Member] Class S Class S,ICON Bond 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 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 Closing [Text Block] Bar Chart [Table] Bar Chart Does Not Reflect Sales Loads [Text] Bar Chart Footnotes [Text Block] Performance Table Heading Performance [Table] Performance Table Narrative Market Index Performance [Table] Performance Table Footnotes Performance Table Closing [Text Block] Shareholder Fees: Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of purchase price) Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) Maximum Deferred Sales Charge (Load) (as a percentage of original purchase cost) Maximum Deferred Sales Charge (as a percentage of Offering Price) Redemption Fee ($15 fee applicable for wire redemptions only) Redemption Fee Redemption Fee ($15 fee for wire redemptions only) Shareholder Fees Column [Text] Maximum Cumulative Sales Charge (as a percentage of Offering Price) Maximum Cumulative Sales Charge (as a percentage) 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 (as a percentage of Amount Redeemed) Redemption Fee ($15 fee applicable for wire redemptions only) Redemption Fee ($15 fee for wire redemptions only) Exchange Fee (as a percentage of Amount Redeemed) Exchange Fee Maximum Account Fee (as a percentage of Assets) Maximum Account Fee Shareholder Fee, Other Operating Expenses: Management Fees Management Fees (as a percentage of Assets) Distribution and/or Service (12b-1) Fees Distribution and Service (12b-1) Fees Expense Recoupments Component1 Other Expenses Other Expenses Other Expenses (as a percentage of Assets): Total Annual Fund Operating Expenses Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses Expense Reimbursements Fee Waiver or Reimbursement Total Annual Fund Operating Expenses Net Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses Operating Expenses Column [Text] Distribution or Similar (Non 12b-1) Fees Component2 Other Expenses Component3 Other Expenses Acquired Fund Fees and Expenses 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: 1 Year Expense Example, No Redemption, 1 Year 3 Years Expense Example, No Redemption, 3 Years 5 Years Expense Example, No Redemption, 5 Years 10 Years Expense Example, No Redemption, 10 Years Expense Example, No Redemption, By Year, Column [Text] Column 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 2003 Annual Return 2004 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 Annual Return 2014 Annual Return 2015 Annual Return 2016 Annual Return 2017 Annual Return 2018 Annual Return 2019 Annual Return 2020 Barclays Capital U.S. Universal Index Excluding Mortgage-Backed Securities (ex-MBS) (reflects no deduction for fees, expenses, or taxes). Barclays Capital Us Universal Index Excluding Mortage Backed Securities [Member] Barclays Capital U.S. Universal Index Excluding Mortgage-Backed Securities (ex-MBS) (reflects no deduction for fees, expenses, or taxes) Barclays Capital U.S. Universal Index (ex-MBS) (reflects no deduction for fees, expenses, or taxes). Barclays Capital Us Universal Index [Member] Barclays Capital U.S. Universal Index (ex-MBS) (reflects no deduction for fees, expenses, or taxes) Average Annual Return: Inception Date Inception Date 1 Year 1 Year 5 Years 5 Years 10 Years 10 Years Since Inception Since Inception Label Risk/Return Detail [Table] Fee Waiver or Reimbursement over Assets, Date of Termination Portfolio Turnover, Rate Expenses Deferred Charges [Text Block] 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]