2.2.0.25truefalse0112 - Document - Risk/Return Summary {Unlabeled} (The Cushing MLP Premier Fund)falsefalsetrue1falsefalseUSDtruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000029794 Member {dei_LegalEntityAxis} : S000029794 Member 3/30/2011 - 3/30/2011 USD ($) $eol_0001144204-11-018232_STD_1_20110330_0_396770x-9992989_396840x-9992988http://www.sec.gov/CIK0001493113duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseck0001493113_SummaryS000029794Memberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_SummaryS000029794Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseck0001493113_S000029794Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.cushingfunds.com/role/riskreturn_s000029794member1falsefalsefalse00The Cushing MLP Premier Fund (Prospectus Summary) | The Cushing MLP Premier FundThe Cushing MLP Premier Fund (Prospectus Summary) | The Cushing MLP Premier Fundfalsefalsefalsefalsefalse1falsefalseUSDtruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000029794 Member {dei_LegalEntityAxis} : S000029794 Member 3/30/2011 - 3/30/2011 USD ($) $eol_0001144204-11-018232_STD_1_20110330_0_396770x-9992989_396840x-9992988http://www.sec.gov/CIK0001493113duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseck0001493113_SummaryS000029794Memberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_SummaryS000029794Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseck0001493113_S000029794Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse3false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SUMMARYfalsefalsefalsefalsefalseOtherxbrli: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalse4false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalse5false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund's investment objective is to seek to produce current income and capital appreciation.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalse6false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and Expenses of the FundfalsefalsefalsefalsefalseOtherxbrli: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalse7false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts is available from your financial professional and in "How to Decide Which Class of Shares to Buy" beginning on page {{27}} of the Fund's prospectus.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalse8false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (fee paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalse9false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://www.cushingfunds.com/role/ShareholderFeesData_S000029794Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://www.cushingfunds.com/role/ShareholderFeesData_S000029794Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsehttp://www.cushingfunds.com/role/ShareholderFeesData_S000029794Memberfalsefalse0113 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091516Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class A Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$2falseColumnperiodPeriod*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class C Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091517Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class C Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$3falseColumnperiodPeriod*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091518Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class I Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05750.0575falsefalsefalsetruefalse2truetruetrue0.00000.0000falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalse0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05750.0575falsefalsefalsetruefalse2truetruetrue0.00000.0000falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalse2falseRowprimaryElement*4false0rr_MaximumDeferredSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph a -Clause i -Subsection instructions falsefalse0rr_MaximumDeferredSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalse3falseRowprimaryElement*5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.000.00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalse0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalse4falseRowprimaryElement*6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.02000.0200falsefalsefalsetruefalse2truetruetrue0.02000.0200falsefalsefalsetruefalse3truetruetrue0.02000.0200falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalse0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02000.0200falsefalsefalsetruefalse2truetruetrue0.02000.0200falsefalsefalsetruefalse3truetruetrue0.02000.0200falsefalsefalsetruefalseOthernanafalsefalse5falseRowprimaryElement*7false0rr_ExchangeFeerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue00falsefalsefalsetruefalse2truefalsetrue00falsefalsefalsetruefalse3truefalsetrue00falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryExchange Fee includes the maximum fee charged for any exchange or transfer of interest from the Fund to another fund. The Fund may include in a footnote to the table, if applicable, a tabular presentation of the range of exchange fees or a narrative explanation of the fees.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 5 -Subsection table falsefalse0rr_ExchangeFeetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue00falsefalsefalsetruefalse2truefalsetrue00falsefalsefalsetruefalse3truefalsetrue00falsefalsefalsetruefalseOthernanafalsefalse35Shareholder Fees The Cushing MLP Premier Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalse10false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalse11false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://www.cushingfunds.com/role/OperatingExpensesData_S000029794Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://www.cushingfunds.com/role/OperatingExpensesData_S000029794Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsehttp://www.cushingfunds.com/role/OperatingExpensesData_S000029794Memberfalsefalse0114 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091516Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class A Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$2falseColumnperiodPeriod*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class C Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091517Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class C Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$3falseColumnperiodPeriod*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091518Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class I Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01100.0110falsefalsefalsetruefalse2truetruetrue0.01100.0110falsefalsefalsetruefalse3truetruetrue0.01100.0110falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalse0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01100.0110falsefalsefalsetruefalse2truetruetrue0.01100.0110falsefalsefalsetruefalse3truetruetrue0.01100.0110falsefalsefalsetruefalseOthernanafalsefalse2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalse3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00400.0040[1]falsefalsefalsetruefalse2truetruetrue0.00400.0040[1]falsefalsefalsetruefalse3truetruetrue0.00400.0040[1]falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalse0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00400.0040falsefalsefalsetruefalse2truetruetrue0.00400.0040falsefalsefalsetruefalse3truetruetrue0.00400.0040falsefalsefalsetruefalseOthernanafalsefalse4falseRowprimaryElement*6false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01750.0175falsefalsefalsetruefalse2truetruetrue0.02500.0250falsefalsefalsetruefalse3truetruetrue0.01500.0150falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalse0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01750.0175falsefalsefalsetruefalse2truetruetrue0.02500.0250falsefalsefalsetruefalse3truetruetrue0.01500.0150falsefalsefalsetruefalseOthernanafalsefalse5falseRowprimaryElement*7false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0010-0.0010[2]falsefalsefalsetruefalse2truetruetrue-0.0010-0.0010[2]falsefalsefalsetruefalse3truetruetrue-0.0010-0.0010[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalse0rr_FeeWaiverOrReimbursementOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue-0.0010-0.0010falsefalsefalsetruefalse2truetruetrue-0.0010-0.0010falsefalsefalsetruefalse3truetruetrue-0.0010-0.0010falsefalsefalsetruefalseOthernanafalsefalse6falseRowprimaryElement*8false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01650.0165falsefalsefalsetruefalse2truetruetrue0.02400.0240falsefalsefalsetruefalse3truetruetrue0.01400.0140falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalse0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01650.0165falsefalsefalsetruefalse2truetruetrue0.02400.0240falsefalsefalsetruefalse3truetruetrue0.01400.0140falsefalsefalsetruefalseOthernanafalsefalse1Based on estimated amounts for the current fiscal year. "Other Expenses" does not reflect estimated deferred and current income tax liability to be incurred by the Fund. The Fund will accrue deferred income tax liability for its future tax liability associated with the capital appreciation of its investments and the distributions received by the Fund on equity securities of MLPs considered to be return of capital and for any net operating gains. The Fund's accrued deferred tax liability will be reflected each day in the Fund's net asset value per share. The Fund's current and deferred tax liability, if any, will depend upon the Fund's net investment gains and losses and realized and unrealized gains and losses on investments and therefore may vary greatly from year to year depending on the nature of the Fund's investments, the performance of those investments and general market conditions. Actual income tax expense, if any, will be incurred over many years, depending on if and when investment gains and losses are realized, the then-current basis of the Fund's assets and other factors. The Fund has not completed a full fiscal year and thus does not have sufficient operating history to accurately estimate anticipated current and deferred tax expenses.2The Investment Adviser has agreed to waive a portion of the management fee, until at least April 1, 2012, such that fund operating expenses (exclusive of any front-end load, deferred sales charge, 12b-1 fees, taxes, income tax expense, brokerage commissions, expenses incurred in connection with any merger or reorganization, acquired fund fees and expenses, or extraordinary expenses such as litigation) will not exceed 1.40% for each of Class A Shares, Class C Shares and Class I Shares, subject to possible recoupment from the Fund in future years on a rolling three year basis (within the three years after the fees have been waived) if such recoupment can be achieved within the foregoing expense limits. Such waiver may not be terminated without the consent of the Board of Trustees prior to April 1, 2012 and may be modified or terminated by the Investment Adviser at any time after April 1, 2012.36Annual Fund Operating Expenses The Cushing MLP Premier FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalse12false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Example:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse13false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses (giving effect to the fee waiver only during the first year) remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalse14false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://www.cushingfunds.com/role/ExpenseExample_S000029794Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://www.cushingfunds.com/role/ExpenseExample_S000029794Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>truehttp://www.cushingfunds.com/role/ExpenseExample_S000029794Memberfalsefalse0115 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue734734falsefalsefalsetruefalse2truefalsetrue347347falsefalsefalsetruefalse3truefalsetrue143143falsefalsefalsetruefalseMonetaryrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalsefalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue10871087falsefalsefalsetruefalse2truefalsetrue772772falsefalsefalsetruefalse3truefalsetrue466466falsefalsefalsetruefalseMonetaryrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalsefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091516Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class A Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue734734falsefalsefalsetruefalse2truefalsetrue10871087falsefalsefalsetruefalseOthernanafalsefalse2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class C Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091517Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class C Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue347347falsefalsefalsetruefalse2truefalsetrue772772falsefalsefalsetruefalseOthernanafalsefalse3falseRowperiodPeriod*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091518Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class I Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue143143falsefalsefalsetruefalse2truefalsetrue466466falsefalsefalsetruefalseOthernanafalsefalse23Expense Example The Cushing MLP Premier Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalse15false0rr_ExpenseExampleNoRedemptionNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>You would pay the following expenses if you did not redeem your shares:</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalse16false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://www.cushingfunds.com/role/ExpenseExampleNoRedemption_S000029794Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://www.cushingfunds.com/role/ExpenseExampleNoRedemption_S000029794Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>truehttp://www.cushingfunds.com/role/ExpenseExampleNoRedemption_S000029794Memberfalsefalse0116 - Schedule - Expense Example, No Redemption {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue734734falsefalsefalsetruefalse2truefalsetrue244244falsefalsefalsetruefalse3truefalsetrue143143falsefalsefalsetruefalseMonetaryrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalsefalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue10871087falsefalsefalsetruefalse2truefalsetrue772772falsefalsefalsetruefalse3truefalsetrue466466falsefalsefalsetruefalseMonetaryrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalsefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091516Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class A Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue734734falsefalsefalsetruefalse2truefalsetrue10871087falsefalsefalsetruefalseOthernanafalsefalse2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class C Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091517Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class C Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue244244falsefalsefalsetruefalse2truefalsetrue772772falsefalsefalsetruefalseOthernanafalsefalse3falseRowperiodPeriod*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseThe Cushing MLP Premier Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_S000029794Memberdei_LegalEntityAxisexplicitMemberfalsefalseThe Cushing MLP Premier Fund Class I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001493113_C000091518Memberrr_ProspectusShareClassAxisexplicitMemberThe Cushing MLP Premier FundThe Cushing MLP Premier Fund Class I Sharesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue143143falsefalsefalsetruefalse2truefalsetrue466466falsefalsefalsetruefalseOthernanafalsefalse23Expense Example, No Redemption The Cushing MLP Premier Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalse17false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Portfolio TurnoverfalsefalsefalsefalsefalseOtherxbrli: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalse18false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes payable by the Fund. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. For the most recent fiscal period from October 20, 2010 through November 30, 2010, the Fund's portfolio turnover rate was 0.74% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalse19false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment Strategies of the FundfalsefalsefalsefalsefalseOtherxbrli: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalse20false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund seeks to achieve its investment objective by investing primarily in a portfolio of master limited partnership ("MLP") investments. Under normal market conditions, the Fund will invest at least 80% of its net assets (plus borrowings for investment purposes) in MLP investments. Entities commonly referred to as "MLPs" are taxed as partnerships for U.S. federal income tax purposes and are generally organized under state law as limited partnerships or limited liability companies. The Fund's MLP investments include investments that offer economic exposure to public MLPs in the form of common or subordinated units issued by MLPs, securities of entities holding primarily general partner or managing member interests in MLPs, debt securities of MLPs, and securities that are derivatives of interests in MLPs, including I-Shares, and derivative instruments in which the Fund may invest that have economic characteristics of MLP securities. The Fund is treated as a regular corporation, or "C" corporation, for U.S. federal income tax purposes. Because of the Fund's concentration in MLP investments, the Fund is not eligible to elect to be treated as a regulated investment company under the Internal Revenue Code of 1986, as amended (the "Code"). Accordingly, the Fund is subject to U.S. federal income tax on its taxable income at the graduated rates applicable to corporations (currently at a maximum rate of 35%) as well as state and local income taxes. The investment strategy of investing primarily in MLPs and electing to be taxed as a regular corporation, or "C" corporation, rather than as a regulated investment company for U.S. federal income tax purposes, is a new and untested investment strategy for open-end registered investment companies such as the Fund. This strategy involves complicated and in some cases unsettled accounting, tax and net asset and share valuation aspects that cause the Fund to differ significantly from most other open-end registered investment companies. This may result in unexpected and potentially significant accounting, tax and valuation consequences for the Fund and for its shareholders. In addition, accounting, tax and valuation practices in this area are still developing, and there may not always be a clear consensus among industry participants as to the most appropriate approach. This may result in changes over time in the practices applied by the Fund, which, in turn, could have material adverse consequences on the Fund and it shareholders. The Fund will focus primarily on Midstream MLPs whose business models are often referred to as "toll road" businesses. Midstream MLPs collect, gather, transport and store natural resources and their byproducts (primarily crude oil, natural gas and refined petroleum products), generally without taking ownership of the physical commodity. Midstream MLPs may also operate ancillary businesses including the marketing of the products and logistical services. Many Midstream MLPs have a history of relatively stable and growing cash distributions. The Adviser believes strong fundamentals are at work that may enable many Midstream MLPs to achieve similar results in the future. The Fund may also invest in MLPs involved in other segments of the natural resources sector, including propane and coal MLPs. The Investment Adviser seeks to invest in MLPs that have distribution yields that, in the Investment Adviser's view, are attractive relative to comparable MLPs and available unit pricing. The Investment Adviser currently focuses on investments in MLPs with operations in the development, production, processing, refining, transportation, storage and marketing of natural resources. Among other things, the Investment Adviser will use fundamental, proprietary research to seek to identify the most attractive MLP investments with attractive distribution yields and distribution growth prospects. MLPs are formed as limited partnerships or limited liability companies and taxed as partnerships for U.S. federal income tax purposes. To be treated as a partnership for U.S. federal income tax purposes, an MLP must derive at least 90% of its gross income for each taxable year from qualifying sources, including natural resources-based activities such as the exploration, development, mining, production, processing, refining, transportation, storage and certain marketing of mineral or natural resources. Currently, most MLPs operate in the natural resources, shipping or real estate sectors. Therefore, the Fund intends to concentrate its investments in the natural resources sector. See "Additional Information about the Investment Strategies and Related Risks of the Fund - Additional Information About MLPs" in the Fund's Prospectus for more information about MLPs. Because the Fund is treated as a regular corporation, or a "C" corporation, for U.S. federal income tax purposes, the Fund will incur tax expenses. In calculating the Fund's daily net asset value in accordance with generally accepted accounting principles, the Fund will, among other things, account for its deferred tax liability and/or asset balances. The Fund will accrue a deferred income tax liability balance, at the currently effective statutory U.S. federal income tax rate (currently 35%) plus an estimated state and local income tax rate, for its future tax liability associated with the capital appreciation of its investments and the distributions received by the Fund on equity securities of MLPs considered to be return of capital and for any net operating gains. Any deferred tax liability balance will reduce the Fund's net asset value. The Fund will accrue a deferred tax asset balance, which reflects an estimate of the Fund's future tax benefit associated with net operating losses and unrealized losses. Any deferred tax asset balance will increase the Fund's net asset value. To the extent the Fund has a deferred tax asset balance, consideration is given as to whether or not a valuation allowance, which would offset the value of some or all of the deferred tax asset balance, is required. The Fund will rely to some extent on information provided by MLPs, which may not be provided to the Fund on a timely basis, to estimate the Fund's deferred tax liability and/or asset balances for purposes of financial statement reporting and determining its net asset value. The daily estimate of the Fund's deferred tax liability and/or asset balances used to calculate the Fund's net asset value could vary dramatically from the Fund's actual tax liability, and, as a result, the determination of the Fund's actual tax liability may have a material impact on the Fund's net asset value. From time to time, the Fund may modify its estimates or assumptions regarding its deferred tax liability and/or asset balances as new information becomes available, which modifications in estimates or assumptions may have a material impact on the Fund's net asset value. See "Net Asset Value," "Tax Matters" and "Additional Information About the Fund's Investment Strategies and Related Risks of the Fund - Principal Risks of Investing in the Fund - Deferred Tax Risks."</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalse21false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Risks of Investing in the FundfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalse22false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund's principal risks are discussed below. The value of the Fund's investments may increase or decrease, which will cause the value of the Fund's shares to increase or decrease. As a result, you may lose money on your investment in the Fund, and there can be no assurance that the Fund will achieve its investment objective. The value of your investment in the Fund will fluctuate, sometimes dramatically, which means you could lose money. Market Risk. The market value of a security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. A security's market value also may decline because of factors that affect a particular industry or industries, such as labor shortages or increased production costs and competitive conditions within an industry. Issuer Risk. The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's products or services. MLPs and Other Natural Resources Sector Companies Risks. Under normal circumstances, the Fund concentrates its investments in the natural resources sector, with an emphasis on securities issued by MLPs. MLPs and other natural resources sector companies are subject to certain risks, including, but not limited to, the following: &#x2022; MLPs and other companies operating in the natural resources sector may be affected by fluctuations in the prices of commodities; &#x2022; the highly cyclical nature of the natural resources sector may adversely affect the earnings or operating cash flows of the issuers in which the Fund will invest; &#x2022; a significant decrease in the production of energy commodities would reduce the revenue, operating income and operating cash flows of MLPs and other natural resources sector companies and, therefore, their ability to make distributions or pay dividends; &#x2022; a sustained decline in demand for energy commodities could adversely affect the revenues and cash flows of MLPs and other natural resources sector companies; &#x2022; MLPs and other natural resources may be subject to construction risk, development risk, acquisition risk or other risks arising from their specific business strategies; &#x2022; the natural resources sector is highly competitive; &#x2022; extreme weather conditions could result in substantial damage to the facilities of certain MLPs and other natural resources sector and significant volatility in the supply of natural resources, commodity prices and the earnings of such companies, and could therefore adversely affect their securities; &#x2022; the amount of cash that the Fund has available to distribute to shareholders will depend on the ability of the companies in which the Fund has an interest to make distributions or pay dividends to their investors, the tax character of those distributions or dividends, and the U.S. federal, state and local income taxes imposed on the Fund as a regular corporation (or "C" corporation); &#x2022; the profitability of MLPs and other natural resources sector companies are subject to significant foreign, federal, state and local regulation in virtually every aspect of their operations and could be adversely affected by changes in the regulatory environment; &#x2022; there is an inherent risk that MLPs may incur environmental costs and liabilities due to the nature of their businesses and the substances they handle and the possibility exists that stricter laws, regulations or enforcement policies could significantly increase the compliance costs of MLPs, and the cost of any remediation that may become necessary, which MLPs may not be able to recover from insurance; &#x2022; certain MLPs and other natural resources sector companies are dependent on their parents or sponsors for a majority of their revenues and any failure by the parents or sponsors to satisfy their payments or obligations would impact the company's revenues and cash flows and ability to make distributions; &#x2022; the operations of MLPs and other natural resources sector companies are subject to many hazards inherent in their business and since the September 11th terrorist attacks, the U.S. government has issued warnings that energy assets, specifically U.S. pipeline infrastructure, may be targeted in future terrorist attacks. See "Additional Information About the Investment Strategies and Related Risks of the Fund - Principal Risks of Investing in the Fund" in the Fund's Prospectus for additional information. Industry Specific Risk. MLPs and other natural resources sector companies are also subject to risks that are specific to the particular industry in which they operate. See "Additional Information About the Investment Strategies and Related Risks of the Fund - Principal Risks of Investing in the Fund" in the Fund's Prospectus for additional information. MLP Structure Risk. Holders of MLP units are subject to certain risks inherent in the structure of MLPs, including (i) tax risks (described further below), (ii) the limited ability to elect or remove management or the general partner or managing member (iii) limited voting rights, except with respect to extraordinary transactions, and (iv) conflicts of interest between the general partner or managing member and its affiliates, on the one hand, and the limited partners or members, on the other hand, including those arising from incentive distribution payments or corporate opportunities. Tax Risk. MLPs do not pay U.S. federal income tax at the partnership level. Rather, each partner is allocated a share of the partnership's income, gains, losses, deductions and expenses. A change in current tax law, or a change in the underlying business mix of a given MLP, could result in an MLP being treated as a corporation for U.S. federal income tax purposes, which would result in such MLP being required to pay U.S. federal income tax on its taxable income. The classification of an MLP as a corporation for U.S. federal income tax purposes would have the effect of reducing the amount of cash available for distribution by the MLP. Thus, if any of the MLPs owned by the Fund were treated as corporations for U.S. federal income tax purposes, it could result in a reduction of the value of your investment in the Fund and lower income. The portion, if any, of a distribution received by the Fund as the holder of an MLP equity security that is offset by the MLP's tax deductions or losses generally will be treated as a return of capital to the extent of the Fund's tax basis in the MLP equity security, which will cause income or gain to be higher, or losses to be lower, upon the sale of the MLP security by the Fund. The final portion of the distributions received by the Fund that are considered return of capital will not be known until the Fund receives a schedule K-1 with respect to each of its MLP investments. Distributions received by shareholders from the Fund that are treated as return of capital would not be subject to U.S. federal income tax, but would have the effect of reducing a shareholder's basis in the shares of the Fund, which would cause gains to be higher, or losses to be lower, upon the sale of shares by such shareholder. The Fund's tax liability will not be known until the Fund completes its annual tax return. The Fund's tax estimates could vary substantially from the actual liability and therefore the determination of the Fund's actual tax liability may have a material impact on the Fund's net asset value. The payment of corporate income taxes imposed on the Fund will decrease cash available for distribution to Shareholders. New Investment Strategy Risk. The investment strategy of investing primarily in MLPs and electing to be taxed as a regular corporation, or "C'' corporation, rather than as a regulated investment company for U.S. federal income tax purposes, is a new and untested investment strategy for open-end registered investment companies such as the Fund. This strategy involves complicated and in some cases unsettled accounting, tax and net asset and share valuation aspects that cause the Fund to differ significantly from most other open-end registered investment companies. This may result in unexpected and potentially significant accounting, tax and valuation consequences for the Fund and for its shareholders. In addition, accounting, tax and valuation practices in this area are still developing, and there may not always be a clear consensus among industry participants as to the most appropriate approach. This may result in changes over time in the practices applied by the Fund, which, in turn, could have material adverse consequences on the Fund and its shareholders. Deferred Tax Risk. Because the Fund is treated as a regular corporation, or a "C" corporation, for U.S. federal income tax purposes, the Fund will incur tax expenses. In calculating the Fund's daily net asset value in accordance with generally accepted accounting principles, the Fund will account for its deferred tax liability and/or asset balances. The Fund will accrue a deferred income tax liability balance, at the currently effective statutory U.S. federal income tax rate (currently 35%) plus an estimated state and local income tax rate, for its future tax liability associated with the capital appreciation of its investments and the distributions received by the Fund on equity securities of MLPs considered to be return of capital and for any net operating gains. Any deferred tax liability balance will reduce the Fund's net asset value. Upon the Fund's sale of a portfolio security, the Fund will be liable for previously deferred taxes. If the Fund is required to sell portfolio securities to meet redemption requests, the Fund may recognize gains for U.S. federal, state and local income tax purposes, which will result in corporate income taxes imposed on the Fund. The Fund will accrue a deferred tax asset balance, which reflects an estimate of the Fund's future tax benefit associated with net operating losses and unrealized losses. Any deferred tax asset balance will increase the Fund's net asset value. To the extent the Fund has a deferred tax asset balance, the Fund will assess whether a valuation allowance, which would offset the value of some or all of the Fund's deferred tax asset balance, is required, considering all positive and negative evidence related to the realization of the Fund's deferred tax asset. The Fund intends to assess whether a valuation allowance is required to offset some or all of any deferred tax asset balance in connection with the calculation of the Fund's net asset value per share each day; however, to the extent the final valuation allowance differs from the estimates of the Fund used in calculating the Fund's daily net asset value, the application of such final valuation allowance could have a material impact on the Fund's net asset value. The Fund's deferred tax liability and/or asset balances are estimated using estimates of effective tax rates expected to apply to taxable income in the years such balances are realized. The Fund will rely to some extent on information provided by MLPs regarding the tax characterization of the distributions made by such MLPs, which may not be provided to the Fund on a timely basis, to estimate the Fund's deferred tax liability and/or asset balances for purposes of financial statement reporting and determining its net asset value. The Fund's estimates regarding its deferred tax liability and/or asset balances are made in good faith; however, the daily estimate of the Fund's deferred tax liability and/or asset balances used to calculate the Fund's net asset value could vary dramatically from the Fund's actual tax liability, and, as a result, the determination of the Fund's actual tax liability may have a material impact on the Fund's net asset value. From time to time, the Fund may modify its estimates or assumptions regarding its deferred tax liability and/or asset balances as new information becomes available. Modifications of the Fund's estimates or assumptions regarding its deferred tax liability and/or asset balances and any applicable valuation allowance, changes in generally accepted accounting principles or related guidance or interpretations thereof, limitations imposed on net operating losses (if any) and changes in applicable tax law could result in increases or decreases in the Fund's net asset value per share, which could be material. Valuation Risk. Market prices may not be readily available for certain of the Fund's investments, and the value of such investments will ordinarily be determined based on fair valuations determined by the Board of Trustees of the Trust (the "Board") or its designee pursuant to procedures adopted by the Board. Equity Securities Risk. MLP common units and other equity securities can be affected by macro-economic and other factors affecting the stock market in general, expectations of interest rates, investor sentiment towards MLPs or the natural resources sector, changes in a particular issuer's financial condition, or unfavorable or unanticipated poor performance of a particular issuer (in the case of MLPs, generally measured in terms of distributable cash flow). Prices of common units of individual MLPs and other equity securities also can be affected by fundamentals unique to the partnership or company, including earnings power and coverage ratios. Liquidity Risk. The Fund may invest up to 15% of its net assets in illiquid securities and certain restricted securities. In addition, certain MLP securities, while liquid, may trade less frequently than those of larger companies due to their smaller capitalizations. In the event certain MLP securities experience limited trading volumes, the prices of such MLPs may display abrupt or erratic movements at times. Additionally, it may be more difficult for the Fund to buy and sell significant amounts of such securities without an unfavorable impact on prevailing market prices. As a result, illiquid or less liquid securities may be difficult to dispose of at a fair price at the times when the Investment Adviser believes it is desirable to do so or is required to do to meet redemption requests or comply with regulatory requirements. The Fund's investment in securities that are less actively traded or over time experience decreased trading volume may restrict its ability to take advantage of other market opportunities or to dispose of securities. This also may affect adversely the Fund's ability to make dividend distributions to you. Non-Diversification Risk. The Fund is a non-diversified, open-end management investment company under the Investment Company Act of 1940, as amended (the "1940 Act") and will not elect to be treated as a regulated investment company under the Code. As a result, there are no regulatory requirements under the 1940 Act or the Code that limit the proportion of the Fund's assets that may be invested in securities of a single issuer. Accordingly, the Fund may invest a greater portion of its assets in a more limited number of issuers than a diversified fund. There are currently approximately 72 publicly traded MLPs. The Fund will select its investments in MLPs from this small pool of issuers together with securities issued by any newly public MLPs, and may invest in securities of private MLPs, affiliates of MLPs and non-MLP issuers, consistent with its investment objective and policies. An investment in the Fund may present greater risk to an investor than an investment in a diversified portfolio because changes in the financial condition or market assessment of a single issuer may cause greater fluctuations in the value of the Fund's shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalse23false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Past PerformancefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalse24false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>A bar chart and past performance table are not included in this prospectus because the Fund has not completed a full calendar year of operations.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalse123Risk/Return Summary (The Cushing MLP Premier Fund) (The Cushing MLP Premier Fund (Prospectus Summary), The Cushing MLP Premier Fund)UnKnownUnKnownUnKnownUnKnownfalsetrue