2.4.0.800000096 - Document - Inverse High Yield Strategy Fund Summary (A-Class, C-Class and Institutional Class Shares) {Unlabeled}falsefalsetrue1false falsefalseAsOf2013-07-29_custom_ProspectusTwoMember_custom_S000015882Memberhttp://www.sec.gov/CIK0000899148duration2013-07-29T00:00:002013-07-29T00:00:001false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00A-Class, C-Class and Institutional Class Shares Prospectus | Inverse High Yield Strategy Fundfalsefalsefalse1false truefalseAsOf2013-07-29_custom_ProspectusTwoMember_custom_S000015882Memberhttp://www.sec.gov/CIK0000899148duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseck0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseck0000899148_S000015882Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMembernanafalse0A-Class, C-Class and Institutional Class Shares Prospectus | Inverse High Yield Strategy Fund2false 4rr_RiskReturnHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Inverse High Yield Strategy Fundfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 false0Risk/Return [Heading]3false 4ck0000899148_SupplementTextBlockck0000899148_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00IMPORTANT INFORMATION ABOUT THE FUND The Inverse High Yield Strategy Fund (the Fund) is very different from most other mutual funds in that it seeks to provide investment results that correlate to the opposite of the performance of the high yield bond market, a result opposite of most mutual funds. The Fund may be riskier than alternatives that do not rely on the use of derivatives to achieve their investment objectives. Because the Fund seeks daily inverse investment results, the return of the Fund for a period of longer than a single trading day will be the result of each days compounded returns over the period, which will very likely differ from the inverse of the return of the high yield bond market for that period. As a consequence, especially in periods of market volatility, the path or trend of the high yield bond market during the longer period may be at least as important to the Funds return for the longer period as the cumulative return of the high yield bond market for the relevant longer period. Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Funds stated investment goal (e.g., -1x) and the cumulative performance of the high yield bond market. The Fund is not suitable for all investors. The Fund should be utilized only by investors who (a) understand the risk of shorting and (b) intend to actively monitor and manage their investments. Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.falsefalsefalsexbrli:stringItemTypestringCustom Element.No definition available.false0Supplement (Text Block)4false 4rr_ObjectiveHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00INVESTMENT OBJECTIVE falsefalsefalsexbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Objective [Heading]5false 4rr_ObjectivePrimaryTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund seeks to provide investment results that inversely correlate, before fees and expenses, to the performance of the high yield bond market.falsefalsefalsenonnum:textBlockItemTypenaInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Objective, Primary [Text Block]6false 4rr_ExpenseHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00FEES AND EXPENSES OF THE FUNDfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph d false0Expense [Heading]7false 4rr_ExpenseNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This table describes the fees and expenses that you may pay if you buy and hold A-Class Shares or C-Class Shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in certain funds in the Guggenheim Investments family of funds. More information about these and other discounts is available from your financial professional and under the Sales Charges section on page 269 of this Prospectus and in the Sales Charges, Reductions, and Waivers section beginning on page 94 of the Funds Statement of Additional Information (the SAI).falsefalsefalsenonnum:textBlockItemTypenaThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Expense Narrative [Text Block]8false 4rr_ShareholderFeesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsexbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 false0Shareholder Fees Caption [Text]9false 4rr_ShareholderFeesTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display: none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesData020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberColumndei_LegalEntityAxisAxisck0000899148_S000015882MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseA-Class, C-Class and Institutional Class Shares Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInverse High Yield Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMemberfalsefalseA-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000043618Memberrr_ProspectusShareClassAxisexplicitMemberA-Class, C-Class and Institutional Class Shares ProspectusInverse High Yield Strategy FundA-Class SharesRatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-07-29T00:00:002013-07-29T00:00:00$2falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberColumndei_LegalEntityAxisAxisck0000899148_S000015882MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseA-Class, C-Class and Institutional Class Shares Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInverse High Yield Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMemberfalsefalseC-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000043619Memberrr_ProspectusShareClassAxisexplicitMemberA-Class, C-Class and Institutional Class Shares ProspectusInverse High Yield Strategy FundC-Class SharesRatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-07-29T00:00:002013-07-29T00:00:00$1falseRowprimaryElement*3false 2rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) 0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04750.0475falsefalsefalse2truetruetrue0.00000.0000falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)2falseRowprimaryElement*4false 2rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum Deferred Sales Charge (Load) (as a percentage of initial purchase price or current market value, whichever is less) 0rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalse2truetruetrue0.010.01falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum Deferred Sales Charge (Load) (as a percentage of initial purchase price or current market value, whichever is less)falseShareholder Fees A-Class, C-Class and Institutional Class Shares Prospectus Inverse High Yield Strategy FundUnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet223423013ColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberColumndei_LegalEntityAxisAxisck0000899148_S000015882MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No definition available.false0Shareholder Fees [Table]10false 4rr_OperatingExpensesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsexbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 7 false0Operating Expenses Caption [Text]11false 4rr_AnnualFundOperatingExpensesTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display: none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesData020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberColumndei_LegalEntityAxisAxisck0000899148_S000015882MemberColumnrr_ProspectusShareClassAxisAxis*Columnrr_PerformanceMeasureAxisAxis*ColumnunitUnit*duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseA-Class, C-Class and Institutional Class Shares Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInverse High Yield Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMemberfalsefalseA-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000043618Memberrr_ProspectusShareClassAxisexplicitMembertruefalse[PerformanceMeasureDomain]rr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberA-Class, C-Class and Institutional Class Shares ProspectusInverse High Yield Strategy FundA-Class Shares[PerformanceMeasureDomain]RatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-07-29T00:00:002013-07-29T00:00:00$2falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberColumndei_LegalEntityAxisAxisck0000899148_S000015882MemberColumnrr_ProspectusShareClassAxisAxis*Columnrr_PerformanceMeasureAxisAxis*ColumnunitUnit*duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseA-Class, C-Class and Institutional Class Shares Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInverse High Yield Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMemberfalsefalseC-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000043619Memberrr_ProspectusShareClassAxisexplicitMembertruefalse[PerformanceMeasureDomain]rr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberA-Class, C-Class and Institutional Class Shares ProspectusInverse High Yield Strategy FundC-Class Shares[PerformanceMeasureDomain]RatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-07-29T00:00:002013-07-29T00:00:00$1falseRowprimaryElement*3false 2rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management Fees 0rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00750.0075falsefalsefalse2truetruetrue0.00750.0075falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management Fees2falseRowprimaryElement*4false 2rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution and/or Shareholder Service (12b-1) Fees 0rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalse2truetruetrue0.010.01falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution and/or Shareholder Service (12b-1) Fees3falseRowprimaryElement*7false 2rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other Expenses 0rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00490.0049falsefalsefalse2truetruetrue0.0050.005falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other Expenses4falseRowprimaryElement*9false 2rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total Annual Fund Operating Expenses 0rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01490.0149falsefalsefalse2truetruetrue0.02250.0225falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total Annual Fund Operating ExpensesfalseAnnual Fund Operating Expenses A-Class, C-Class and Institutional Class Shares Prospectus Inverse High Yield Strategy FundUnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet2491629027ColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberColumndei_LegalEntityAxisAxisck0000899148_S000015882MemberColumnrr_ProspectusShareClassAxisAxis*Columnrr_PerformanceMeasureAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No definition available.false0Annual Fund Operating Expenses [Table]12false 4rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false0Expense Example [Heading]13false 4rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This 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 Funds operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:falsefalsefalsenonnum:textBlockItemTypenaThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false0Expense Example Narrative [Text Block]14false 4rr_ExpenseExampleWithRedemptionTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display: none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExample020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false 2rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false21 Year USDfalsefalse$2falseColumnprimaryElement*4false 2rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false23 Years USDfalsefalse$3falseColumnprimaryElement*5false 2rr_ExpenseExampleYear05rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false25 Years USDfalsefalse$4falseColumnprimaryElement*6false 2rr_ExpenseExampleYear10rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false210 Years USDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberRowdei_LegalEntityAxisAxisck0000899148_S000015882MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseA-Class, C-Class and Institutional Class Shares Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInverse High Yield Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMemberfalsefalseA-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000043618Memberrr_ProspectusShareClassAxisexplicitMemberA-Class, C-Class and Institutional Class Shares ProspectusInverse High Yield Strategy FundA-Class SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue619619falsefalsefalse2truefalsetrue924924falsefalsefalse3truefalsetrue12501250falsefalsefalse4truefalsetrue21702170falsefalsefalsenanafalse0A-Class Shares2falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberRowdei_LegalEntityAxisAxisck0000899148_S000015882MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseA-Class, C-Class and Institutional Class Shares Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInverse High Yield Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMemberfalsefalseC-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000043619Memberrr_ProspectusShareClassAxisexplicitMemberA-Class, C-Class and Institutional Class Shares ProspectusInverse High Yield Strategy FundC-Class SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue328328falsefalsefalse2truefalsetrue703703falsefalsefalse3truefalsetrue12051205falsefalsefalse4truefalsetrue25852585falsefalsefalsenanafalse0C-Class SharesfalseExpense Example A-Class, C-Class and Institutional Class Shares Prospectus Inverse High Yield Strategy Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet426442032ColumnprimaryElement*RowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberRowdei_LegalEntityAxisAxisck0000899148_S000015882MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No definition available.false0Expense Example, With Redemption [Table]15false 4rr_ExpenseExampleNoRedemptionNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You would pay the following expenses if you did not redeem your shares:falsefalsefalsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No definition available.false0Expense Example, No Redemption Narrative [Text Block]16false 4rr_ExpenseExampleNoRedemptionTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none">~ http://xbrl.sec.gov/rr/role/ExpenseExampleNoRedemption column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display: none">~ http://xbrl.sec.gov/rr/role/ExpenseExampleNoRedemption column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExampleNoRedemption020040 - Schedule - Expense Example, No Redemption {Transposed}truefalsefalse1falseColumnprimaryElement*3false 2rr_ExpenseExampleNoRedemptionYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 2 -Subparagraph 1 false21 Year USDfalsefalse$2falseColumnprimaryElement*4false 2rr_ExpenseExampleNoRedemptionYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabelrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 2 -Subparagraph 1 false23 Years USDfalsefalse$3falseColumnprimaryElement*5false 2rr_ExpenseExampleNoRedemptionYear05rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 -Subparagraph f false25 Years USDfalsefalse$4falseColumnprimaryElement*6false 2rr_ExpenseExampleNoRedemptionYear10rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 -Subparagraph f false210 Years USDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberRowdei_LegalEntityAxisAxisck0000899148_S000015882MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseA-Class, C-Class and Institutional Class Shares Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInverse High Yield Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMemberfalsefalseC-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000043619Memberrr_ProspectusShareClassAxisexplicitMemberA-Class, C-Class and Institutional Class Shares ProspectusInverse High Yield Strategy FundC-Class SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue228228falsefalsefalse2truefalsetrue703703falsefalsefalse3truefalsetrue12051205falsefalsefalse4truefalsetrue25852585falsefalsefalsenanafalse0A-Class, C-Class and Institutional Class Shares Prospectus Inverse High Yield Strategy Fund C-Class SharesfalseExpense Example, No Redemption (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet413041024ColumnprimaryElement*RowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberRowdei_LegalEntityAxisAxisck0000899148_S000015882MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No definition available.false0Expense Example, No Redemption [Table]17false 4rr_PortfolioTurnoverHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVER falsefalsefalsexbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 5 false0Portfolio Turnover [Heading]18false 4rr_PortfolioTurnoverTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The 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 Total Annual Fund Operating Expenses or in the Example, affect the Funds performance. During the most recent fiscal year, the Funds portfolio turnover rate was 0% of the average value of its portfolio. The Funds portfolio turnover rate is calculated without regard to cash instruments or derivatives. If such instruments were included, the Funds portfolio turnover rate might be significantly higher.falsefalsefalsenonnum:textBlockItemTypenaDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 3 false0Portfolio Turnover [Text Block]19false 4rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PRINCIPAL INVESTMENT STRATEGIES falsefalsefalsexbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy [Heading]20false 4rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund seeks to gain inverse exposure to the performance of the high yield bond market by investing in credit default swaps, futures and other financial instruments with economic characteristics opposite to that of the high yield bond market as represented by U.S. and Canadian high yield bonds. Generally, high yield bonds, which are also commonly referred to as junk bonds, are those bonds rated BB+ and lower by Standard & Poors Rating Service or Ba1 and lower by Moodys Investor Services, Inc., but may include unrated bonds that the Advisor determines are of similar quality. The Advisor will consider the liquidity, transaction costs and relative value of available investments in seeking to meet the Funds objective. The Fund will primarily invest in credit default swaps to gain inverse exposure to the high yield bond market. Credit default swaps are instruments which allow for the full or partial transfer of third party credit risk, with respect to a particular entity or entities, from one counterparty to the other. A buyer of credit default swaps is buying credit protection or mitigating credit risk. A seller of credit default swaps is selling credit protection or assuming credit risk. The Fund will normally be a buyer of credit protection as it seeks to gain inverse exposure to the high yield bond market, but also may sell credit protection (assuming credit risk) from time to time in order to maintain the appropriate level of exposure to the high yield bond market, such as during times of heavy redemption activity. In addition, the Fund may invest in bond futures for the purpose of managing duration risk. For cash management purposes, the Fund may invest in other fixed income securities and money market instruments. The Fund also may invest in other financial instruments including corporate notes, convertible debt securities, preferred securities and derivatives thereof, as well as other investment companies, including exchange-traded funds, unit investment trusts, and closed-end funds, that provide inverse exposure to the high yield debt market. While the Fund anticipates investing in these instruments to seek to achieve its investment objective, the extent of the Funds investment in these instruments may vary from day to day depending on a number of different factors, including price, availability, and general market conditions. Certain of the Funds derivative investments may be traded in the over-the-counter (OTC) market, which generally provides for less transparency than exchange-traded derivative instruments. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments that in combination should provide inverse exposure to the U.S. and Canadian high yield bond markets.falsefalsefalsenonnum:textBlockItemTypenaPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy Narrative [Text Block]21false 4rr_RiskHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PRINCIPAL RISKSfalsefalsefalsexbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 false0Risk [Heading]22false 4rr_RiskNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to a number of additional risks that may affect the value of its shares, including: Active Trading RiskActive trading, also called high portfolio turnover, may result in higher brokerage costs or mark-up charges, which may negatively affect Fund performance. High portfolio turnover may also result in high levels of short-term capital gains, which are generally taxable as ordinary income when distributed to shareholders. Large movements of assets into and out of the Fund due to active trading also may adversely affect the Funds ability to achieve its investment objective. CFTC Regulatory RiskThe Commodity Futures Trading Commission (CFTC) has recently adopted amendments to certain CFTC rules, and is in the process of promulgating new rules, that will subject the Fund and the Advisor to certain CFTC disclosure, reporting, and recordkeeping requirements if the Fund does not operate within certain derivatives trading and marketing limitations. Compliance with these additional requirements will likely increase Fund expenses and may adversely affect the Funds ability to obtain exposure to certain investments and the commodities market generally. Certain of the regulatory requirements that would apply to the Fund have not yet been adopted, and it is unclear what the effect of those requirements would be on the Fund if they are adopted. Consistent with the Funds investment strategies and investment policies, the Advisor intends to maintain the flexibility to utilize certain derivatives beyond the CFTCs new trading limitations and to comply with CFTC rules to the extent required to maintain such investment flexibility. Correlation and Compounding RiskA number of factors may affect the Funds ability to achieve a high degree of correlation with its benchmark, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The risk of the Fund not achieving its investment objective will be more acute when the high yield bond market experiences extreme volatility. In addition, as a result of compounding, the Funds performance is likely to be either greater than or less than the inverse performance of the high yield bond market, before accounting for fees and Fund expenses. Counterparty Credit RiskThe Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Funds use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, if a swap agreement counterparty defaults on its payment obligations to the Fund, this default will cause the value of your investment in the Fund to decrease. Swap agreements also may be considered to be illiquid. Similarly, if the credit quality of an issuer or guarantor of a debt instrument improves, this change may adversely affect the value of the Funds investment. Credit Default Swap RiskThe Funds investments in credit default swaps may subject the Fund to greater risks than if the Fund were to invest directly in high yield bonds. When investing in credit default swaps, the Fund is exposed to the credit risk of both the counterparty to the credit default swap and the issuer of the underlying reference obligation. The Fund could realize a loss on its investment if it does not correctly evaluate the creditworthiness of the issuer of the bond or other reference obligation on which the credit default swap is based, as well as the continued creditworthiness of the counterparty. Investments in credit default swaps also are subject to liquidity risk. Credit RiskChanges in an issuers financial strength or in an issuers or debt securitys credit rating may affect a securitys value and thus have an impact on Fund performance. Currency RiskThe Funds indirect and direct exposure to foreign currencies subjects the Fund to the risk that those currencies will decline in value relative to the U.S. dollar, or, in the case of short positions, that the U.S. dollar will decline in value relative to the currency being hedged. The Fund also may incur transaction costs in connection with conversions between various currencies. Derivatives RiskThe Funds investments in derivatives, such as bond futures, may pose risks in addition to those associated with investing directly in securities or other investments, including illiquidity of the derivatives, imperfect correlations with underlying investments or the Funds other portfolio holdings, lack of availability and counterparty risk. The Fund could lose more than the principal amount invested. Early Closing RiskThe Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Funds inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses. Fixed Income RiskThe Funds investments in fixed income securities will change in value in response to interest rate changes and other factors, such as the perception of the issuers creditworthiness. For example, the value of fixed income securities will generally decrease when interest rates rise, which may cause the value of the Fund to decrease. In addition, the Funds investments in fixed income securities with longer maturities will fluctuate more in response to interest rate changes. Foreign Issuer Exposure RiskThe Fund may invest in securities of foreign companies directly or in financial instruments that are indirectly linked to the performance of foreign issuers. Foreign securities markets generally have less trading volume and less liquidity than U.S. markets, and prices in some foreign markets may fluctuate more than those of securities traded on U.S. markets. High Yield RiskThe Fund may invest in high yield securities and unrated securities of similar credit quality (commonly known as junk bonds), which may be subject to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities. Investment in Investment Companies RiskInvesting in other investment companies, including ETFs, subjects the Fund to those risks affecting the investment company, including the possibility that the value of the underlying securities held by the investment company could decrease. Moreover, the Fund will incur its pro rata share of the expenses of the underlying investment companies expenses. Issuer Specific RiskThe value of a security may increase or decrease for a number of reasons which directly relate to the issuer. For example, with respect to the Fund, perceived poor management performance, financial leverage or reduced demand of the issuers goods or services may contribute to a decrease in the value of a security. A decrease in the value of the securities of an issuer or guarantor of a debt instrument may cause the value of your investment in the Fund to decrease. Leveraging RiskThe Funds investment in derivative instruments generally requires a small investment relative to the amount of investment exposure assumed. As a result, such investments may give rise to losses that exceed the amount invested in those instruments. The cost of investing in such instruments generally increases as interest rates increase, which will lower the Funds return. Liquidity RiskIn certain circumstances, it may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price. While the Fund intends to invest in liquid futures, options, forwards and swap contracts, under certain market conditions, such as when the market makes a limit move, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments. Market RiskThe Funds investments in securities and derivatives, in general, are subject to market risks that may cause their prices, and therefore the Funds value, to fluctuate over time. An investment in the Fund may lose money. Non-Diversification RiskThe Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single security could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. OTC Trading RiskCertain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivative contracts. Portfolio Turnover RiskThe Funds strategy may frequently involve buying and selling portfolio securities to rebalance the Funds exposure to various market sectors. Higher portfolio turnover may result in the Fund paying higher levels of transaction costs. Portfolio turnover risk may cause the Funds performance to be less than you expect. Repurchase Agreement RiskThe Funds investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term. Short Sales RiskShort selling a security involves selling a borrowed security with the expectation that the value of the security will decline, so that the security may be purchased at a lower price when returning the borrowed security. The risk for loss on short selling is greater than the original value of the securities sold short because the price of the borrowed security may rise, thereby increasing the price at which the security must be purchased. Government actions also may affect the Funds ability to engage in short selling. Temporary Defensive Investment RiskThe Fund does not attempt to take defensive positions in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets. Trading Halt RiskIf a trading halt occurs, the Fund may temporarily be unable to purchase or sell securities, options or futures contracts. Such a trading halt near the time the Fund prices its shares may limit the Funds ability to use leverage and may prevent the Fund from achieving its investment objective.falsefalsefalsenonnum:textBlockItemTypenaNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false0Risk Narrative [Text Block]23false 4rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PERFORMANCE INFORMATION falsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Bar Chart and Performance Table [Heading]24false 4rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The following bar chart shows the performance of the C-Class Shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following tables show the performance of the A-Class Shares and C-Class Shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and tables assume the reinvestment of dividends and capital gains distributions but do not reflect sales charges. If they did, returns would be lower. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.   Updated performance information is available on the Funds website at www.guggenheiminvestments.com or by calling Guggenheim Investments Client Services at 800.820.0888.falsefalsefalsenonnum:textBlockItemTypenaRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Performance Narrative [Text Block]25false 4rr_BarChartNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The performance information shown below for C-Class Shares is based on a calendar year. The year-to-date return for the period from January 1, 2013 through June 30, 2013 is -5.32%.falsefalsefalsenonnum:textBlockItemTypenaProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph i false0Bar Chart Narrative [Text Block]26false 4rr_BarChartTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none">~ http://xbrl.sec.gov/rr/role/BarChartData column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalseBarChart91.jpg<div style="display: none">~ http://xbrl.sec.gov/rr/role/BarChartData column period compact * column dei_DocumentInformationDocumentAxis compact ck0000899148_ProspectusTwoMember column dei_LegalEntityAxis compact ck0000899148_S000015882Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartData020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberColumndei_LegalEntityAxisAxisck0000899148_S000015882MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-07-29T00:00:002013-07-29T00:00:00falsefalseA-Class, C-Class and Institutional Class Shares Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_ProspectusTwoMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInverse High Yield Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000015882Memberdei_LegalEntityAxisexplicitMemberfalsefalseC-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000043619Memberrr_ProspectusShareClassAxisexplicitMemberA-Class, C-Class and Institutional Class Shares ProspectusInverse High Yield Strategy FundC-Class SharesRatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-07-29T00:00:002013-07-29T00:00:00$1falseRowprimaryElement*8false8false 2rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.5428-0.5428falsefalsefalse2truetruefalse-0.3654-0.3654falsefalsefalse3truetruefalse0.40940.4094falsefalsefalse4truetruefalse-0.4188-0.4188falsefalsefalse5truetruefalse0.48530.4853falsefalsefalse6truetruefalse-0.5470-0.5470falsefalsefalse7truetruefalse0.37530.3753falsefalsefalse8truetruefalse-0.5195-0.5195falsefalsefalse9truetruefalse-0.3520-0.3520falsefalsefalse10truetruefalse0.24780.2478falsefalsefalse11truetruefalse-0.3934-0.3934falsefalsefalse12truetruefalse-0.4930-0.4930falsefalsefalse13truetruefalse-0.3596-0.3596falsefalsefalse14truetruefalse-0.4396-0.4396falsefalsefalse15truetruefalse-0.3400-0.3400falsefalsefalse16truetruefalse-0.4363-0.4363falsefalsefalse17truetruefalse-0.4073-0.4073falsefalsefalse18truetruefalse-0.4561-0.4561falsefalsefalse19truetruefalse-0.1051-0.1051falsefalsefalse20truetruefalse-0.2308-0.2308falsefalsefalse21truetruefalse-0.4988-0.4988falsefalsefalse22truetruefalse-0.4552-0.4552falsefalsefalse23truetruefalse-0.5759-0.5759falsefalsefalse24truetruefalse-0.4778-0.4778falsefalsefalse25truetruefalse-0.2470-0.2470falsefalsefalse26truetruefalse-0.4479-0.4479falsefalsefalse27truetruefalse-0.4931-0.4931falsefalsefalse28truetruefalse-0.3766-0.3766falsefalsefalse29truetruefalse-0.3372-0.3372falsefalsefalse30truetruefalse-0.4536-0.4536falsefalsefalse31truetruefalse-0.4519-0.4519falsefalsefalse32truetruefalse-0.2514-0.2514falsefalsefalse33truetruefalse-0.2809-0.2809falsefalsefalse34truetruefalse-0.5613-0.5613falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38truetruefalse0.07210.0721falsefalsefalse39truetruefalse-0.1202-0.1202falsefalsefalse40truetruefalse-0.4131-0.4131falsefalsefalse41truetruefalse0.49980.4998falsefalsefalse42truetruefalse-0.2944-0.2944falsefalsefalse43truetruefalse-0.0878-0.0878falsefalsefalse44truetruefalse0.02970.0297falsefalsefalse45truetruefalse-0.4023-0.4023falsefalsefalse46falsetruefalse00falsefalsefalse47truetruefalse0.01650.0165falsefalsefalse48truetruefalse-0.5471-0.5471falsefalsefalse49truetruefalse-0.3705-0.3705falsefalsefalse50truetruefalse0.39510.3951falsefalsefalse51truetruefalse-0.4243-0.4243falsefalsefalse52truetruefalse0.47080.4708falsefalsefalse53truetruefalse-0.5504-0.5504falsefalsefalse54truetruefalse0.36510.3651falsefalsefalse55truetruefalse-0.5231-0.5231falsefalsefalse56truetruefalse-0.3569-0.3569falsefalsefalse57truetruefalse0.23880.2388falsefalsefalse58truetruefalse-0.3981-0.3981falsefalsefalse59truetruefalse-0.4971-0.4971falsefalsefalse60truetruefalse-0.3641-0.3641falsefalsefalse61truetruefalse-0.4443-0.4443falsefalsefalse62truetruefalse-0.3450-0.3450falsefalsefalse63truetruefalse-0.4410-0.4410falsefalsefalse64truetruefalse-0.4144-0.4144falsefalsefalse65truetruefalse-0.4617-0.4617falsefalsefalse66truetruefalse-0.1135-0.1135falsefalsefalse67truetruefalse-0.2384-0.2384falsefalsefalse68truetruefalse-0.5044-0.5044falsefalsefalse69truetruefalse-0.4605-0.4605falsefalsefalse70truetruefalse-0.5803-0.5803falsefalsefalse71truetruefalse-0.4833-0.4833falsefalsefalse72truetruefalse-0.2554-0.2554falsefalsefalse73truetruefalse-0.4534-0.4534falsefalsefalse74truetruefalse-0.4976-0.4976falsefalsefalse75truetruefalse-0.3829-0.3829falsefalsefalse76truetruefalse-0.3418-0.3418falsefalsefalse77truetruefalse-0.4595-0.4595falsefalsefalse78truetruefalse-0.4568-0.4568falsefalsefalse79truetruefalse-0.2588-0.2588falsefalsefalse80truetruefalse-0.2882-0.2882falsefalsefalse81truetruefalse-0.5651-0.5651falsefalsefalse82falsetruefalse00falsefalsefalse83falsetruefalse00falsefalsefalse84falsetruefalse00falsefalsefalse85truetruefalse0.06440.0644falsefalsefalse86truetruefalse-0.1268-0.1268falsefalsefalse87truetruefalse-0.4178-0.4178falsefalsefalse88truetruefalse0.48540.4854falsefalsefalse89truetruefalse-0.3015-0.3015falsefalsefalse90truetruefalse-0.0941-0.0941falsefalsefalse91truetruefalse0.02170.0217falsefalsefalse92truetruefalse-0.4065-0.4065falsefalsefalse93falsetruefalse00falsefalsefalse94truetruefalse0.01650.0165falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false02008 2rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false02008 0rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.02170.0217falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false020082falseRowprimaryElement*9false9false 2rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.36080.3608falsefalsefalse2truetruefalse0.24810.2481falsefalsefalse3truetruefalse-0.2725-0.2725falsefalsefalse4truetruefalse0.52240.5224falsefalsefalse5truetruefalse-0.4034-0.4034falsefalsefalse6truetruefalse0.51530.5153falsefalsefalse7truetruefalse-0.3546-0.3546falsefalsefalse8truetruefalse0.37350.3735falsefalsefalse9truetruefalse0.24850.2485falsefalsefalse10truetruefalse-0.3226-0.3226falsefalsefalse11truetruefalse0.48090.4809falsefalsefalse12truetruefalse0.49140.4914falsefalsefalse13truetruefalse0.55990.5599falsefalsefalse14truetruefalse0.50250.5025falsefalsefalse15truetruefalse0.33520.3352falsefalsefalse16truetruefalse0.55950.5595falsefalsefalse17truetruefalse-0.0360-0.0360falsefalsefalse18truetruefalse0.56840.5684falsefalsefalse19truetruefalse0.19460.1946falsefalsefalse20truetruefalse0.19350.1935falsefalsefalse21truetruefalse0.70660.7066falsefalsefalse22truetruefalse0.39010.3901falsefalsefalse23truetruefalse0.63240.6324falsefalsefalse24truetruefalse0.19480.1948falsefalsefalse25truetruefalse0.25100.2510falsefalsefalse26truetruefalse0.65420.6542falsefalsefalse27truetruefalse0.35750.3575falsefalsefalse28truetruefalse0.51590.5159falsefalsefalse29truetruefalse0.41960.4196falsefalsefalse30truetruefalse0.55840.5584falsefalsefalse31truetruefalse0.29170.2917falsefalsefalse32truetruefalse0.15370.1537falsefalsefalse33truetruefalse0.14030.1403falsefalsefalse34truetruefalse0.30350.3035falsefalsefalse35truetruefalse0.14200.1420falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38truetruefalse-0.1630-0.1630falsefalsefalse39truetruefalse0.07600.0760falsefalsefalse40truetruefalse0.22740.2274falsefalsefalse41truetruefalse-0.3124-0.3124falsefalsefalse42truetruefalse0.19530.1953falsefalsefalse43truetruefalse0.11070.1107falsefalsefalse44truetruefalse-0.1917-0.1917falsefalsefalse45truetruefalse0.27320.2732falsefalsefalse46falsetruefalse00falsefalsefalse47truetruefalse0.00050.0005falsefalsefalse48truetruefalse0.34650.3465falsefalsefalse49truetruefalse0.23820.2382falsefalsefalse50truetruefalse-0.2800-0.2800falsefalsefalse51truetruefalse0.50810.5081falsefalsefalse52truetruefalse-0.4094-0.4094falsefalsefalse53truetruefalse0.50410.5041falsefalsefalse54truetruefalse-0.3596-0.3596falsefalsefalse55truetruefalse0.36210.3621falsefalsefalse56truetruefalse0.23750.2375falsefalsefalse57truetruefalse-0.3275-0.3275falsefalsefalse58truetruefalse0.47030.4703falsefalsefalse59truetruefalse0.48130.4813falsefalsefalse60truetruefalse0.54740.5474falsefalsefalse61truetruefalse0.48900.4890falsefalsefalse62truetruefalse0.32560.3256falsefalsefalse63truetruefalse0.54670.5467falsefalsefalse64truetruefalse-0.0403-0.0403falsefalsefalse65truetruefalse0.55270.5527falsefalsefalse66truetruefalse0.18210.1821falsefalsefalse67truetruefalse0.18210.1821falsefalsefalse68truetruefalse0.69400.6940falsefalsefalse69truetruefalse0.37570.3757falsefalsefalse70truetruefalse0.61610.6161falsefalsefalse71truetruefalse0.18590.1859falsefalsefalse72truetruefalse0.23960.2396falsefalsefalse73truetruefalse0.63900.6390falsefalsefalse74truetruefalse0.34350.3435falsefalsefalse75truetruefalse0.50060.5006falsefalsefalse76truetruefalse0.40450.4045falsefalsefalse77truetruefalse0.54210.5421falsefalsefalse78truetruefalse0.27780.2778falsefalsefalse79truetruefalse0.14050.1405falsefalsefalse80truetruefalse0.12890.1289falsefalsefalse81truetruefalse0.29260.2926falsefalsefalse82truetruefalse0.13230.1323falsefalsefalse83falsetruefalse00falsefalsefalse84falsetruefalse00falsefalsefalse85truetruefalse-0.1631-0.1631falsefalsefalse86truetruefalse0.06810.0681falsefalsefalse87truetruefalse0.22040.2204falsefalsefalse88truetruefalse-0.3196-0.3196falsefalsefalse89truetruefalse0.18360.1836falsefalsefalse90truetruefalse0.10330.1033falsefalsefalse91truetruefalse-0.1979-0.1979falsefalsefalse92truetruefalse0.26280.2628falsefalsefalse93falsetruefalse00falsefalsefalse94truetruefalse0.00050.0005falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false02009 2rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false02009 0rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1979-0.1979falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false020093falseRowprimaryElement*10false10false 2rr_AnnualReturn2010rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20760.2076falsefalsefalse2truetruefalse0.13410.1341falsefalsefalse3truetruefalse-0.1683-0.1683falsefalsefalse4truetruefalse0.18510.1851falsefalsefalse5truetruefalse-0.2066-0.2066falsefalsefalse6truetruefalse0.37970.3797falsefalsefalse7truetruefalse-0.2526-0.2526falsefalsefalse8truetruefalse0.37770.3777falsefalsefalse9truetruefalse0.25250.2525falsefalsefalse10truetruefalse-0.2733-0.2733falsefalsefalse11truetruefalse0.24860.2486falsefalsefalse12truetruefalse0.19700.1970falsefalsefalse13truetruefalse0.32460.3246falsefalsefalse14truetruefalse0.19530.1953falsefalsefalse15truetruefalse0.24730.2473falsefalsefalse16truetruefalse0.22300.2230falsefalsefalse17truetruefalse0.12760.1276falsefalsefalse18truetruefalse0.27250.2725falsefalsefalse19truetruefalse0.10560.1056falsefalsefalse20truetruefalse0.17580.1758falsefalsefalse21truetruefalse0.08550.0855falsefalsefalse22truetruefalse0.19370.1937falsefalsefalse23truetruefalse0.26850.2685falsefalsefalse24truetruefalse0.14780.1478falsefalsefalse25truetruefalse0.06760.0676falsefalsefalse26truetruefalse0.21250.2125falsefalsefalse27truetruefalse0.30360.3036falsefalsefalse28truetruefalse0.38390.3839falsefalsefalse29truetruefalse0.24730.2473falsefalsefalse30truetruefalse0.12770.1277falsefalsefalse31truetruefalse0.15130.1513falsefalsefalse32truetruefalse0.24150.2415falsefalsefalse33truetruefalse0.06870.0687falsefalsefalse34truetruefalse-0.1144-0.1144falsefalsefalse35truetruefalse0.12960.1296falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38truetruefalse-0.0423-0.0423falsefalsefalse39truetruefalse-0.0320-0.0320falsefalsefalse40truetruefalse0.24520.2452falsefalsefalse41truetruefalse0.10470.1047falsefalsefalse42truetruefalse-0.1305-0.1305falsefalsefalse43truetruefalse0.16630.1663falsefalsefalse44truetruefalse-0.1824-0.1824falsefalsefalse45truetruefalse0.10770.1077falsefalsefalse46falsetruefalse00falsefalsefalse47truetruefalse0.00010.0001falsefalsefalse48truetruefalse0.19560.1956falsefalsefalse49truetruefalse0.12530.1253falsefalsefalse50truetruefalse-0.1767-0.1767falsefalsefalse51truetruefalse0.17340.1734falsefalsefalse52truetruefalse-0.2136-0.2136falsefalsefalse53truetruefalse0.37090.3709falsefalsefalse54truetruefalse-0.2579-0.2579falsefalsefalse55truetruefalse0.36850.3685falsefalsefalse56truetruefalse0.24200.2420falsefalsefalse57truetruefalse-0.2792-0.2792falsefalsefalse58truetruefalse0.23910.2391falsefalsefalse59truetruefalse0.18810.1881falsefalsefalse60truetruefalse0.31460.3146falsefalsefalse61truetruefalse0.18590.1859falsefalsefalse62truetruefalse0.23860.2386falsefalsefalse63truetruefalse0.21370.2137falsefalsefalse64truetruefalse0.11710.1171falsefalsefalse65truetruefalse0.25950.2595falsefalsefalse66truetruefalse0.09630.0963falsefalsefalse67truetruefalse0.16470.1647falsefalsefalse68truetruefalse0.07680.0768falsefalsefalse69truetruefalse0.18220.1822falsefalsefalse70truetruefalse0.25630.2563falsefalsefalse71truetruefalse0.13670.1367falsefalsefalse72truetruefalse0.05860.0586falsefalsefalse73truetruefalse0.19920.1992falsefalsefalse74truetruefalse0.28880.2888falsefalsefalse75truetruefalse0.37020.3702falsefalsefalse76truetruefalse0.23550.2355falsefalsefalse77truetruefalse0.11930.1193falsefalsefalse78truetruefalse0.14290.1429falsefalsefalse79truetruefalse0.23060.2306falsefalsefalse80truetruefalse0.05750.0575falsefalsefalse81truetruefalse-0.1201-0.1201falsefalsefalse82truetruefalse0.12080.1208falsefalsefalse83falsetruefalse00falsefalsefalse84falsetruefalse00falsefalsefalse85truetruefalse-0.0492-0.0492falsefalsefalse86truetruefalse-0.0389-0.0389falsefalsefalse87truetruefalse0.23280.2328falsefalsefalse88truetruefalse0.09400.0940falsefalsefalse89truetruefalse-0.1397-0.1397falsefalsefalse90truetruefalse0.15620.1562falsefalsefalse91truetruefalse-0.1886-0.1886falsefalsefalse92truetruefalse0.09960.0996falsefalsefalse93falsetruefalse00falsefalsefalse94truetruefalse0.00010.0001falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false02010 2rr_AnnualReturn2010rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false02010 0rr_AnnualReturn2010rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1886-0.1886falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false020104falseRowprimaryElement*11false11false 2rr_AnnualReturn2011rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0057-0.0057falsefalsefalse2truetruefalse0.00360.0036falsefalsefalse3truetruefalse-0.0836-0.0836falsefalsefalse4truetruefalse0.02420.0242falsefalsefalse5truetruefalse-0.0983-0.0983falsefalsefalse6truetruefalse-0.0785-0.0785falsefalsefalse7truetruefalse-0.0760-0.0760falsefalsefalse8truetruefalse-0.1180-0.1180falsefalsefalse9truetruefalse-0.0513-0.0513falsefalsefalse10truetruefalse-0.0818-0.0818falsefalsefalse11truetruefalse-0.0115-0.0115falsefalsefalse12truetruefalse-0.0349-0.0349falsefalsefalse13truetruefalse-0.0056-0.0056falsefalsefalse14truetruefalse-0.0750-0.0750falsefalsefalse15truetruefalse0.03440.0344falsefalsefalse16truetruefalse-0.1046-0.1046falsefalsefalse17truetruefalse-0.2090-0.2090falsefalsefalse18truetruefalse-0.1623-0.1623falsefalsefalse19truetruefalse0.11390.1139falsefalsefalse20truetruefalse0.14000.1400falsefalsefalse21truetruefalse-0.1662-0.1662falsefalsefalse22truetruefalse-0.0555-0.0555falsefalsefalse23truetruefalse-0.0896-0.0896falsefalsefalse24truetruefalse-0.1443-0.1443falsefalsefalse25truetruefalse0.04700.0470falsefalsefalse26truetruefalse-0.1187-0.1187falsefalsefalse27truetruefalse0.02430.0243falsefalsefalse28truetruefalse-0.2411-0.2411falsefalsefalse29truetruefalse0.05490.0549falsefalsefalse30truetruefalse-0.0921-0.0921falsefalsefalse31truetruefalse-0.1385-0.1385falsefalsefalse32truetruefalse-0.1109-0.1109falsefalsefalse33truetruefalse0.17910.1791falsefalsefalse34truetruefalse-0.1399-0.1399falsefalsefalse35truetruefalse-0.2916-0.2916falsefalsefalse36truetruefalse-0.4137-0.4137falsefalsefalse37truetruefalse0.11660.1166falsefalsefalse38truetruefalse-0.0408-0.0408falsefalsefalse39truetruefalse-0.0288-0.0288falsefalsefalse40truetruefalse0.01580.0158falsefalsefalse41truetruefalse0.42920.4292falsefalsefalse42truetruefalse-0.3039-0.3039falsefalsefalse43truetruefalse0.03180.0318falsefalsefalse44truetruefalse-0.0882-0.0882falsefalsefalse45truetruefalse-0.0688-0.0688falsefalsefalse46truetruefalse-0.0104-0.0104falsefalsefalse47truetruefalse0.00010.0001falsefalsefalse48truetruefalse-0.0157-0.0157falsefalsefalse49truetruefalse-0.0054-0.0054falsefalsefalse50truetruefalse-0.0927-0.0927falsefalsefalse51truetruefalse0.01450.0145falsefalsefalse52truetruefalse-0.1087-0.1087falsefalsefalse53truetruefalse-0.0866-0.0866falsefalsefalse54truetruefalse-0.0827-0.0827falsefalsefalse55truetruefalse-0.1245-0.1245falsefalsefalse56truetruefalse-0.0591-0.0591falsefalsefalse57truetruefalse-0.0883-0.0883falsefalsefalse58truetruefalse-0.0189-0.0189falsefalsefalse59truetruefalse-0.0420-0.0420falsefalsefalse60truetruefalse-0.0127-0.0127falsefalsefalse61truetruefalse-0.0819-0.0819falsefalsefalse62truetruefalse0.02680.0268falsefalsefalse63truetruefalse-0.1105-0.1105falsefalsefalse64truetruefalse-0.2172-0.2172falsefalsefalse65truetruefalse-0.1705-0.1705falsefalsefalse66truetruefalse0.10160.1016falsefalsefalse67truetruefalse0.12870.1287falsefalsefalse68truetruefalse-0.1754-0.1754falsefalsefalse69truetruefalse-0.0648-0.0648falsefalsefalse70truetruefalse-0.0988-0.0988falsefalsefalse71truetruefalse-0.1528-0.1528falsefalsefalse72truetruefalse0.03740.0374falsefalsefalse73truetruefalse-0.1274-0.1274falsefalsefalse74truetruefalse0.01420.0142falsefalsefalse75truetruefalse-0.2486-0.2486falsefalsefalse76truetruefalse0.04190.0419falsefalsefalse77truetruefalse-0.1025-0.1025falsefalsefalse78truetruefalse-0.1465-0.1465falsefalsefalse79truetruefalse-0.1198-0.1198falsefalsefalse80truetruefalse0.16800.1680falsefalsefalse81truetruefalse-0.1465-0.1465falsefalsefalse82truetruefalse-0.2980-0.2980falsefalsefalse83truetruefalse-0.4156-0.4156falsefalsefalse84truetruefalse0.14370.1437falsefalsefalse85truetruefalse-0.0489-0.0489falsefalsefalse86truetruefalse-0.0360-0.0360falsefalsefalse87truetruefalse0.00850.0085falsefalsefalse88truetruefalse0.41480.4148falsefalsefalse89truetruefalse-0.3103-0.3103falsefalsefalse90truetruefalse0.02470.0247falsefalsefalse91truetruefalse-0.0948-0.0948falsefalsefalse92truetruefalse-0.0754-0.0754falsefalsefalse93truetruefalse-0.0182-0.0182falsefalsefalse94truetruefalse0.00010.0001falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false02011 2rr_AnnualReturn2011rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false02011 0rr_AnnualReturn2011rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0948-0.0948falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false020115falseRowprimaryElement*12false12false 2rr_AnnualReturn2012rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22820.2282falsefalsefalse2truetruefalse0.14290.1429falsefalsefalse3truetruefalse-0.1608-0.1608falsefalsefalse4truetruefalse0.17140.1714falsefalsefalse5truetruefalse-0.1832-0.1832falsefalsefalse6truetruefalse0.24490.2449falsefalsefalse7truetruefalse-0.1814-0.1814falsefalsefalse8truetruefalse0.22050.2205falsefalsefalse9truetruefalse0.14600.1460falsefalsefalse10truetruefalse-0.1777-0.1777falsefalsefalse11truetruefalse0.13750.1375falsefalsefalse12truetruefalse0.22190.2219falsefalsefalse13truetruefalse0.16270.1627falsefalsefalse14truetruefalse0.15790.1579falsefalsefalse15truetruefalse0.10420.1042falsefalsefalse16truetruefalse0.18120.1812falsefalsefalse17truetruefalse0.24860.2486falsefalsefalse18truetruefalse0.11550.1155falsefalsefalse19truetruefalse0.36540.3654falsefalsefalse20truetruefalse0.09760.0976falsefalsefalse21truetruefalse0.00320.0032falsefalsefalse22truetruefalse0.02760.0276falsefalsefalse23truetruefalse0.00310.0031falsefalsefalse24truetruefalse0.22900.2290falsefalsefalse25truetruefalse0.17530.1753falsefalsefalse26truetruefalse0.19660.1966falsefalsefalse27truetruefalse0.21430.2143falsefalsefalse28truetruefalse-0.0409-0.0409falsefalsefalse29truetruefalse0.17540.1754falsefalsefalse30truetruefalse0.11800.1180falsefalsefalse31truetruefalse0.04510.0451falsefalsefalse32truetruefalse0.17430.1743falsefalsefalse33truetruefalse0.01470.0147falsefalsefalse34truetruefalse0.25770.2577falsefalsefalse35truetruefalse0.20260.2026falsefalsefalse36truetruefalse0.10180.1018falsefalsefalse37truetruefalse-0.2730-0.2730falsefalsefalse38truetruefalse-0.0610-0.0610falsefalsefalse39truetruefalse0.00930.0093falsefalsefalse40truetruefalse0.17880.1788falsefalsefalse41truetruefalse0.04510.0451falsefalsefalse42truetruefalse-0.0544-0.0544falsefalsefalse43truetruefalse0.13680.1368falsefalsefalse44truetruefalse-0.1523-0.1523falsefalsefalse45truetruefalse0.04000.0400falsefalsefalse46truetruefalse0.08350.0835falsefalsefalse47truetruefalse0.00000.0000falsefalsefalse48truetruefalse0.21650.2165falsefalsefalse49truetruefalse0.13370.1337falsefalsefalse50truetruefalse-0.1696-0.1696falsefalsefalse51truetruefalse0.15850.1585falsefalsefalse52truetruefalse-0.1898-0.1898falsefalsefalse53truetruefalse0.23540.2354falsefalsefalse54truetruefalse-0.1879-0.1879falsefalsefalse55truetruefalse0.21110.2111falsefalsefalse56truetruefalse0.13600.1360falsefalsefalse57truetruefalse-0.1846-0.1846falsefalsefalse58truetruefalse0.12910.1291falsefalsefalse59truetruefalse0.21260.2126falsefalsefalse60truetruefalse0.15410.1541falsefalsefalse61truetruefalse0.14850.1485falsefalsefalse62truetruefalse0.09600.0960falsefalsefalse63truetruefalse0.17250.1725falsefalsefalse64truetruefalse0.23650.2365falsefalsefalse65truetruefalse0.10450.1045falsefalsefalse66truetruefalse0.35210.3521falsefalsefalse67truetruefalse0.08670.0867falsefalsefalse68truetruefalse-0.0068-0.0068falsefalsefalse69truetruefalse0.01700.0170falsefalsefalse70truetruefalse-0.0069-0.0069falsefalsefalse71truetruefalse0.21700.2170falsefalsefalse72truetruefalse0.16320.1632falsefalsefalse73truetruefalse0.18470.1847falsefalsefalse74truetruefalse0.20230.2023falsefalsefalse75truetruefalse-0.0503-0.0503falsefalsefalse76truetruefalse0.16520.1652falsefalsefalse77truetruefalse0.10680.1068falsefalsefalse78truetruefalse0.03380.0338falsefalsefalse79truetruefalse0.16320.1632falsefalsefalse80truetruefalse0.00440.0044falsefalsefalse81truetruefalse0.24910.2491falsefalsefalse82truetruefalse0.19300.1930falsefalsefalse83truetruefalse0.09550.0955falsefalsefalse84truetruefalse-0.2564-0.2564falsefalsefalse85truetruefalse-0.0679-0.0679falsefalsefalse86truetruefalse0.00170.0017falsefalsefalse87truetruefalse0.16980.1698falsefalsefalse88truetruefalse0.03440.0344falsefalsefalse89truetruefalse-0.0657-0.0657falsefalsefalse90truetruefalse0.12770.1277falsefalsefalse91truetruefalse-0.1588-0.1588falsefalsefalse92truetruefalse0.03190.0319falsefalsefalse93truetruefalse0.07560.0756falsefalsefalse94truetruefalse0.00000.0000falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false02012 2rr_AnnualReturn2012rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false02012 0rr_AnnualReturn2012rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1588-0.1588falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false02012falseAnnual Total Returns UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet1509110015ColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0000899148_ProspectusTwoMemberColumndei_LegalEntityAxisAxisck0000899148_S000015882MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to BarChartData.No definition available.false0Bar Chart [Table]27false 4rr_BarChartClosingTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<table cellspacing="0" cellpadding="0" style="width: 100%; border-collapse: collapse"> <tr> <td style="vertical-align: top"> Highest Quarter Return (quarter ended 3/31/2009) 10.17%</td> <td style="vertical-align: bottom; font: 8pt/115% Calibri, Helvetica, Sans-Serif; text-align: justify"> </td> <td nowrap="nowrap" style="vertical-align: bottom; text-align: right"> Lowest Quarter Return (quarter ended 9/30/2009) -11.04%</td></tr> </table>falsefalsefalsenonnum:textBlockItemTypenaIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Bar Chart Closing [Text Block]28false 4rr_PerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2012)falsefalsefalsexbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c false0Performance Table Heading29false 4rr_PerformanceTableNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.falsefalsefalsenonnum:textBlockItemTypenaIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also should show the returns of an appropriate broad-based securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). 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