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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading American Beacon High Yield Bond Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund’s investment objective is high current income and capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
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. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds. More information about these and other discounts is available from your financial professional and in “Choosing Your Share Class” on page 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2014-02-28
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 100% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 100.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
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 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 may be higher or lower, based on these assumptions, your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption Assuming no redemption of shares:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
This Fund seeks to maximize current income by investing in a diversified portfolio of public and private issue debt securities that are generally rated below investment grade (such as BB or lower by Standard & Poor’s Ratings Services or Fitch, Inc. and/or Ba or lower by Moody’s Investors Service, Inc.) or deemed to be below investment grade by an investment sub-advisor. These types of securities are commonly referred to as “high-yield bonds” or “junk bonds.” The Fund seeks capital appreciation by investing in issues whose relative value is expected to increase over time. The Fund has no limitations regarding the maturities of the debt securities it can buy or the market capitalization of the issuers of those securities.

The Manager allocates the assets of the Fund among different sub-advisors. The Manager believes that this strategy may help the Fund outperform other investment styles over the longer term while reducing volatility and downside risk.

The Fund seeks its investment objective by investing, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in a diversified portfolio of domestic and foreign high-yield bonds. High-yield issuers are generally those which have below investment grade ratings because they are relatively small in size, relatively young in years, relatively leveraged financially (perhaps borrowing heavily to finance expansion or due to a leveraged buyout), or formerly “blue chip” companies that have encountered some financial difficulties.

In selecting investments, the Fund’s sub-advisors utilize a bottom-up and research-driven investment process that relies heavily on internal research and fundamental credit analysis. The investment philosophy of each sub-advisor concentrates on identification of relative value and downside protection.

To a lesser extent, the Fund may invest in other securities, including investment grade securities, foreign securities, common and preferred stocks and convertible securities, in keeping with the Fund’s overall investment objective.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is designed primarily for investors seeking current income from a fund that invests mainly in a variety of high-yield, high-risk debt securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in below investment-grade debt securities and the price changes in those securities that can occur when interest rates change. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

The Fund is subject to the risk that the issuer of a bond will fail to make timely payment of interest or principal. A decline in an issuer’s credit rating can cause the price of its bonds to go down. Since the Fund invests in lower-quality debt securities considered speculative in nature, this risk will be substantial.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common and preferred stocks and convertible securities. Such investments may expose the Fund to additional risks.

Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company. Preferred stocks and convertible securities are sensitive to movements in interest rates. In addition, convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible securities’ investment value. Investments in rights and warrants may be more speculative than certain other types of investments because rights and warrants do not carry with them dividend or voting rights with respect to the underlying securities, or any rights in the assets of the issuer. In addition, the value of a right or a warrant does not necessarily change with the value of the underlying securities, and a right or a warrant ceases to have value if it is not exercised prior to its expiration date.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

High-Yield Securities Risk

Investing in high-yield, non-investment grade bonds generally involves significantly greater risks of loss of your money than an investment in investment grade bonds. Compared with issuers of investment grade bonds, high-yield bonds are more likely to encounter financial difficulties and to be materially affected by these difficulties. Rising interest rates may compound these difficulties and reduce an issuer’s ability to repay principal and interest obligations. Issuers of lower-rated securities also have a greater risk of default or bankruptcy.

Interest Rate Risk

The Fund is subject to the risk that the market value of the bonds it holds will decline due to rising interest rates. When interest rates rise, the prices of most bonds go down. The price of a bond is also affected by its maturity. Bonds with longer maturities generally have greater sensitivity to changes in interest rates.

Investment Risk

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

The Fund is subject to market risks that can affect the value of its shares. These risks include political, regulatory, market and economic developments, including developments that impact specific economic sectors, industries or segments of the market. For example, market risk involves the possibility that the value of the Fund’s investments will decline due to drops in the overall high-yield bond market. Changes in the economic climate, investor perceptions, and stock market volatility can cause the prices of the Fund’s investments to decline, regardless of the financial conditions of the issuers held by the Fund. From time to time, certain investments held by the Fund may have limited marketability or contractual limitations on their resale and may be difficult to value and sell at favorable times or prices. If the Fund is forced to sell holdings to meet redemption requests, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in high yield bonds that may lack market liquidity, it is subject to the risk of market timing activities.  The limited trading activity of some high yield bonds may result in market prices that do not reflect the true market value of these illiquid securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or a sub-advisor for the Fund may not perform to expectations. This could result in the Fund’s underperformance compared to other funds with similar investment objectives.

Small and Medium Capitalization Companies Risk

Investing in the securities of small and medium capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies, since small and medium-sized companies may have limited operating history, product lines, and financial resources, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.

Unrated Securities Risk

Some unrated securities may not have an active trading market or may be difficult to value, which means the Fund might have difficulty selling them promptly at an acceptable price.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing how the Fund’s performance has varied from year to year. The table shows how the Fund’s performance compares to a broad-based market index and the Lipper® High Current Yield Bond Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Investor Class shares on March 1, 2002, Y Class shares on March 1, 2010, A Class shares on May 17, 2010 and C Class shares on September 1, 2010. In the table below, the performance of the Institutional Class is shown for Y Class shares for all periods up to the inception of Y Class and for Investor Class shares before March 1, 2002. The performance of the Institutional Class is shown for the A Class and C Class shares from January 1, 2002 through March 1, 2002, and the performance of the Investor Class is shown from March 1, 2002 up to the inception of the A Class and C Class shares. The older share classes would have had similar annual returns to the newer share classes because the shares are invested in the same portfolio securities. However, because the older classes had lower expenses, their performance was better than the new classes would have realized in the same period. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Sales charges are not reflected in the bar chart and table below. If those charges were included, returns of A Class shares would be less than those shown.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Institutional Class shares
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads Sales charges are not reflected in the bar chart and table below. If those charges were included, returns of A Class shares would be less than those shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
   
Highest Quarterly Return:
19.31%
(1/1/03 through 12/31/12)
(2nd Quarter 2009)
Lowest Quarterly Return:
-18.52%
(1/1/03 through 12/31/12)
(4th Quarter 2008)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 19.31%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (18.52%)
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns For the periods ended December 31, 2012
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 If you hold your Fund shares through a tax-deferred arrangement, such as an IRA or a 401(k), the after-tax returns do not apply to your situation.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.
JPMorgan Global High-Yield Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 16.21% [1]
5 Years rr_AverageAnnualReturnYear05 10.45% [1]
10 Years rr_AverageAnnualReturnYear10 10.70% [1]
Lipper High Current Yield Bond Funds Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 15.40% [1]
5 Years rr_AverageAnnualReturnYear05 7.73% [1]
10 Years rr_AverageAnnualReturnYear10 8.89% [1]
Institutional Class
  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Management fees rr_ManagementFeesOverAssets 0.43%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.50%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual fund operating expenses rr_ExpensesOverAssets 0.94% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 96
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 300
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 520
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,155
Annual Return 2003 rr_AnnualReturn2003 18.49%
Annual Return 2004 rr_AnnualReturn2004 9.33%
Annual Return 2005 rr_AnnualReturn2005 2.30%
Annual Return 2006 rr_AnnualReturn2006 9.60%
Annual Return 2007 rr_AnnualReturn2007 2.84%
Annual Return 2008 rr_AnnualReturn2008 (27.64%)
Annual Return 2009 rr_AnnualReturn2009 47.88%
Annual Return 2010 rr_AnnualReturn2010 14.10%
Annual Return 2011 rr_AnnualReturn2011 2.91%
Annual Return 2012 rr_AnnualReturn2012 15.34%
1 Year rr_AverageAnnualReturnYear01 15.34% [1]
5 Years rr_AverageAnnualReturnYear05 7.70% [1]
10 Years rr_AverageAnnualReturnYear10 8.03% [1]
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 29, 2000 [1]
Institutional Class | After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 12.40% [1]
5 Years rr_AverageAnnualReturnYear05 4.46% [1]
10 Years rr_AverageAnnualReturnYear10 4.93% [1]
Institutional Class | After Taxes on Distributions and Sales
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 9.86% [1]
5 Years rr_AverageAnnualReturnYear05 4.56% [1]
10 Years rr_AverageAnnualReturnYear10 5.01% [1]
Investor Class
  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Management fees rr_ManagementFeesOverAssets 0.43%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.73%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual fund operating expenses rr_ExpensesOverAssets 1.17% [2]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%)
Total annual fund operating expenses after expense reduction and reimbursement rr_NetExpensesOverAssets 1.10% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 112
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 365
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 638
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,415
1 Year rr_AverageAnnualReturnYear01 14.94% [1]
5 Years rr_AverageAnnualReturnYear05 7.42% [1]
10 Years rr_AverageAnnualReturnYear10 7.74% [1]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2002 [1]
Y Class
  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Management fees rr_ManagementFeesOverAssets 0.43%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.70%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual fund operating expenses rr_ExpensesOverAssets 1.14% [2]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.15%)
Total annual fund operating expenses after expense reduction and reimbursement rr_NetExpensesOverAssets 0.99% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 101
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 348
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 613
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,374
1 Year rr_AverageAnnualReturnYear01 15.01% [1]
5 Years rr_AverageAnnualReturnYear05 7.55% [1]
10 Years rr_AverageAnnualReturnYear10 7.96% [1]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2010 [1]
A Class
  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.75%
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Management fees rr_ManagementFeesOverAssets 0.43%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.78%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual fund operating expenses rr_ExpensesOverAssets 1.47% [2]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.34%)
Total annual fund operating expenses after expense reduction and reimbursement rr_NetExpensesOverAssets 1.13% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 585
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 886
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,209
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,121
1 Year rr_AverageAnnualReturnYear01 14.98% [1]
5 Years rr_AverageAnnualReturnYear05 7.46% [1]
10 Years rr_AverageAnnualReturnYear10 7.76% [1]
Inception Date rr_AverageAnnualReturnInceptionDate May 17, 2010 [1]
C Class
  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Management fees rr_ManagementFeesOverAssets 0.43%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.73%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual fund operating expenses rr_ExpensesOverAssets 2.17% [2]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.29%)
Total annual fund operating expenses after expense reduction and reimbursement rr_NetExpensesOverAssets 1.88% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 291
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 651
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,138
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,481
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 191
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 651
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,138
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,481
1 Year rr_AverageAnnualReturnYear01 14.15% [1]
5 Years rr_AverageAnnualReturnYear05 7.04% [1]
10 Years rr_AverageAnnualReturnYear10 7.55% [1]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 01, 2010 [1]
[1] After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary. 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. If you hold your Fund shares through a tax-deferred arrangement, such as an IRA or a 401(k), the after-tax returns do not apply to your situation.
[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
[3] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class ,Y Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.12% for the A Class, 1.87% for the C Class, 0.98% of the Y Class and 1.09% for the Investor class (excluding taxes, brokerage commissions, acquired fund fees and expenses and other extraordinary expenses such as litigation). The contractual expense arrangement can be changed by approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual or voluntary fee reductions or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own reduction or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the percentage limit contractually agreed.