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Registrant Name

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Highland Funds II

Prospectus Date

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Feb. 01, 2013

Pyxis Energy MLP Fund

Objective, Primary [Text Block]

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Risk/Return [Heading]

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Pyxis Energy MLP Fund

(Formerly Pyxis Energy and Materials Fund)

Objective [Heading]

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Investment Objective

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The investment objective of Pyxis Energy MLP Fund (the “Fund”) is to provide investors with current income and capital appreciation.

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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The following 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 on purchases of Class A Shares if you and your family invest, or agree to invest in the future, at least $50,000 in Pyxis Funds II alternative funds, equity funds and/or asset allocation funds, or at least $100,000 in Pyxis Funds II fixed income funds. More information about these and other discounts is available from your financial professional and in the “Reduced Sales Charges for Class A Shares” section on page 31 of the Fund’s Prospectus and the “Programs for Reducing or Eliminating Sales Charges” section on page 34 of the Fund’s Statement of Additional Information.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

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January 31, 2014

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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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 increase the tax liability of the Fund. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Expense Example, affect the Fund’s performance. During the period December 1, 2011 (the date the Fund commenced operations) through September 30, 2012, the Fund had a portfolio turnover rate of 254% (not annualized) of the average value of its portfolio.

Portfolio Turnover, Rate

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254.00%

Expenses Deferred Charges [Text Block]

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The contingent deferred sales charge (“CDSC”) on Class C Shares is 1.00% for redemption of shares within the first year of purchase. There is no CDSC on Class C Shares thereafter.

Expense Breakpoint Discounts [Text]

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You may qualify for sales charge discounts on purchases of Class A Shares if you and your family invest, or agree to invest in the future, at least $50,000 in Pyxis Funds II alternative funds, equity funds and/or asset allocation funds, or at least $100,000 in Pyxis Funds II fixed income funds. More information about these and other discounts is available from your financial professional and in the “Reduced Sales Charges for Class A Shares” section on page 31 of the Fund’s Prospectus and the “Programs for Reducing or Eliminating Sales Charges” section on page 34 of the Fund’s Statement of Additional Information.

Expense Breakpoint, Minimum Investment Required [Amount]

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50,000

Other Expenses, New Fund, Based on Estimates [Text]

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“Other Expenses” are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

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Expense Example

Expense Example Narrative [Text Block]

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This Example helps you compare the cost of investing in the Fund to the cost of investing in other mutual funds. The Example assumes that (i) you invest $10,000 in the Fund for the time periods indicated and then sell or redeem all your shares at the end of those periods, (ii) your investment has a 5% return each year, and (iii) operating expenses remain the same. Your actual costs may be higher or lower.

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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Effective February 1, 2013, the Fund revised its investment strategy to focus on master limited partnership (“MLP”) investments. Under normal market conditions, the Fund seeks to achieve its objective by investing at least 80% of its net assets (plus any borrowings for investment purposes) in a portfolio of MLP investments. MLPs typically are characterized as “publicly traded partnerships” that qualify to be treated as partnerships for U.S. federal income tax purposes and are principally engaged in one or more aspects of the exploration, production, processing, transmission, marketing, storage or delivery of energy-related commodities, such as natural gas, natural gas liquids, coal, crude oil or refined petroleum products (collectively, the energy industry). 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. Certain of the benefits Fund shareholders are expected to derive from the Fund’s MLP investments depend largely on the MLPs’ treatment as partnerships for U.S. federal income tax purposes. See “MLP Tax Risk” below for additional details.

After the Fund implements its revised strategy to concentrate in MLP investments, retroactive to the beginning of the Fund’s current taxable year, which began on October 1, 2012 and ends on September 30, 2013, and continuing for future taxable years, the Fund will no longer be eligible for treatment as a regulated investment company under the Internal Revenue Code of 1986, as amended (the “Code”). Accordingly, the Fund will be treated as a regular corporation, or “C” corporation, for U.S. federal income tax purposes. As a result, the Fund will be 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. However, based on a review of the historic results of the types of MLPs in which the Fund intends to invest, Highland Capital Management, L.P. (“HCM”), sub-adviser of the Fund, currently expects that, at least in the early years of the Fund’s life, the cash distributions it receives with respect to its investments in equity securities of MLPs will typically exceed the net taxable income allocated to the Fund from such MLPs, due to a variety of factors, including significant non-cash deductions such as depreciation and depletion. Any such excess in a taxable year will not be treated as income to the Fund, but rather will be treated as a tax-deferred return of capital to the Fund for U.S. federal income tax purposes, to the extent of the Fund’s basis in the MLP securities. Distributions the Fund receives from a MLP that exceed the Fund’s basis in the securities of that MLP are treated as taxable income or gains in the Fund’s hands. Thus, HCM expects that the Fund would experience relatively more tax deferral (and thus lower corporate income tax expense) during the early years of the Fund’s operations than during its later years. See “Taxation” in this Prospectus and “Fund-Related Tax Risks: C Corporation Structure Tax Risks” below for additional details, including information on distributions, redemptions and the tax consequences of C corporation status.

In addition, the Fund may invest up to 20% of the value of its total assets in a wide variety of securities and financial instruments, of all kinds and descriptions, that are not MLP investments, such as equity securities, equity-linked securities, fixed income securities (including “junk bonds”), and money market securities. The Fund may invest without limitation in Exchange Traded Funds (“ETFs”) and may invest up to 20% of the value of its total assets in ETFs that do not provide exposure to MLPs. The Fund may invest in securities of issuers of any market capitalization. The Fund may invest in securities of any credit quality.

The Fund may invest in securities of non-U.S. issuers, which may include, without limitation, emerging market issuers. Such securities may be denominated in U.S. dollars, non-U.S. currencies or multinational currency units (such as the Euro). At times, the Fund intends to hedge currency exposure resulting from investments denominated in non U.S. currencies.

Derivatives, which are instruments that have a value based on another instrument, exchange rate or index, may be used as substitutes for securities in which the Fund can invest. The Fund may use derivatives, primarily options and foreign currency transactions (e.g., foreign currency swaps, futures, and forwards), as tools in the management of portfolio assets. The Fund may also use such derivatives to hedge various investments for risk management and for speculative purposes.

The Fund may borrow an amount up to 33 1/3% (or such other percentage permitted by law) of its total assets (including the amount borrowed) less all liabilities other than borrowings. The Fund may borrow for investment purposes, to meet redemption requests and for temporary, extraordinary or emergency purposes. The use of borrowing for investment purposes (i.e., leverage) increases both investment opportunity and investment risk. However, the Fund has no present intention to use borrowing for investment purposes.

The Fund’s investment strategy utilizes the analytical models of HCM to evaluate potential investments. In selecting investments for the Fund, HCM typically focuses on MLP issuers that it believes: (i) have stable cash flows and pay regular distributions; (ii) have potential for long-term distribution growth; (iii) may be subject to a value catalyst, such as industry developments, regulatory changes, changes in management, acquisitions, sale or spin-off of a division; (iv) are well-managed; (v) will benefit from favorable demand and supply dynamics for its products and services; (vi) are best in class; and/or (vii) are underappreciated by market analysts. HCM will typically focus on companies that are exhibiting one or more of these indicators. Technical analysis may also be used to help in the decision making process.

HCM may sell short securities of a company that it believes: (i) is overvalued relative to normalized business and industry fundamentals or to the expected growth that HCM believes the company will achieve; (ii) has a weak competitive position relative to peers; (iii) engages in questionable accounting practices; (iv) shows declining cash flow and/or liquidity; (v) has distribution estimates that HCM believes are too high; (vi) has weak competitive barriers to entry; (vii) suffers from deteriorating industry and/or business fundamentals; (viii) has a weak management team; (ix) will see multiple contraction; (x) is not adapting to changes in technological, regulatory or competitive environments; or (xi) provides a hedge against the Fund’s long exposure, such as a broad based market ETF. Technical analysis may be used to help in the decision making process. The Fund may engage in short sales that are not made “against-the-box,” which means that the Fund may sell short securities even when they are not actually owned or offset at all times during the period the short position is open. Short sales that are not made “against-the-box” could result in unlimited loss.

HCM generates investment ideas from a variety of different sources. These include, but are not limited to, screening software that analyzes both fundamental and technical factors, industry contacts, consultants, company press releases, company conference calls, conversations with company management teams, buy-side contacts, sell-side contacts, brokers, third-party research, independent research of financial and corporate information, third-party research databases, and news services. HCM will make investment decisions based on its analysis of the security’s value, and will also take into account its view of macroeconomic conditions and industry trends. HCM will make investments without regard to a company’s level of capitalization. HCM is an affiliated of the Adviser.

The Fund is non-diversified as defined in the Investment Company Act of 1940, as amended, (the “1940 Act”). The Fund is not intended to be a complete investment program.

Strategy Portfolio Concentration [Text]

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Under normal market conditions, the Fund seeks to achieve its objective by investing at least 80% of its net assets (plus any borrowings for investment purposes) in a portfolio of MLP investments. MLPs typically are characterized as “publicly traded partnerships” that qualify to be treated as partnerships for U.S. federal income tax purposes and are principally engaged in one or more aspects of the exploration, production, processing, transmission, marketing, storage or delivery of energy-related commodities, such as natural gas, natural gas liquids, coal, crude oil or refined petroleum products (collectively, the energy industry).

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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When you sell Fund shares, they may be worth less than what you paid for them. Consequently, you can lose money by investing in the Fund. No assurance can be given that the Fund will achieve its investment objective, and investment results may vary substantially over time and from period to period. An investment in the Fund is not appropriate for all investors.

Industry Concentration Risk is the risk that the Fund may be particularly susceptible to economic, political or regulatory events affecting those industries in which the Fund focuses its investments. Because the Fund normally invests at least 80% of the value of its assets in MLP investments, the Fund’s performance largely depends on the overall condition of these industries and the Fund is susceptible to economic, political and regulatory risks or other occurrences associated with these industries.

MLP Risk is the risk of investing in MLP units, which involves some risks that differ from an investment in the equity securities of a company. The Fund intends to invest substantially in MLP units. Holders of MLP units have limited control and voting rights on matters affecting the partnership. Holders of units issued by a MLP are exposed to a remote possibility of liability for all of the obligations of that MLP in the event that a court determines that the rights of the holders of MLP units to vote to remove or replace the general partner of that MLP, to approve amendments to that MLP’s partnership agreement, or to take other action under the partnership agreement of that MLP would constitute “control” of the business of that MLP, or a court or governmental agency determines that the MLP is conducting business in a state without complying with the partnership statute of that state. Holders of MLP units are also exposed to the risk that they will be required to repay amounts to the MLP that are wrongfully distributed to them. Investments in MLP units also present special tax risks. See “MLP Tax Risk” below.

MLP Tax Risk is the risk that the MLPs in which the Fund invests will fail to be treated as partnerships for U.S. federal income tax purposes. The Fund’s ability to meet its investment objective will depend, in large measure, on the level of dividends, distributions or income it receives from the MLPs in which it invests and on the MLPs’ continued treatment as partnerships for U.S. federal income tax purposes. If a MLP does not meet current legal requirements to maintain its partnership status, or if it is unable to do so because of tax or other law changes, it would be treated as a corporation for U.S. federal income tax purposes. In that case, the MLP would be obligated to pay U.S. federal income tax (as well as state and local taxes) at the entity level on its taxable income and distributions received by the Fund would be taxable to the Fund as dividend income to the extent of the MLP’s current and accumulated earnings and profits for federal tax purposes. The classification of a MLP as a corporation for U.S. federal income tax purposes could have the effect of reducing the amount of cash available for distribution by the MLP and the value of the Fund’s investment in any such MLP. As a result, the value of the Fund’s shares and the cash available for distribution to Fund shareholders could be materially reduced.

Fund-Related Tax Risks are tax risks related to an investment in the Fund, including, but not limited to:

C Corporation Structure Tax Risks. Unlike most mutual funds, the Fund will not be entitled to pass-through tax treatment as a regulated investment company. Instead, the Fund will be treated as a regular corporation, or “C” corporation, for U.S. federal income tax purposes. Accordingly, the Fund generally will be subject to U.S. federal income tax on its investment income and gains at the graduated rates applicable to corporations as well as state and local taxes. However, based on a review of the historic results of the types of MLPs in which the Fund intends to invest, HCM currently expects that, at least in the early years of the Fund’s life, the cash distributions it receives with respect to its investments in equity securities of MLPs will typically exceed the taxable income allocated to the Fund from such MLPs, due to a variety of factors, including significant non-cash deductions such as depreciation and depletion. Any such excess in a taxable year will not be treated as income to the Fund, but rather will be treated as a tax-deferred return of capital to the Fund for U.S. federal income tax purposes, to the extent of the Fund’s basis in the MLP securities. Distributions the Fund receives from a MLP that exceed the Fund’s basis in the securities of that MLP are treated as taxable income or gains in the Fund’s hands.

Thus, HCM expects that the Fund would experience relatively more tax deferral (and thus lower corporate income tax expense) during the early years of the Fund’s operations than during its later years.

The Fund’s receipt of return-of-capital distributions from MLPs also will cause the Fund’s taxable income or gains to be higher, or losses to be lower, upon the ultimate sale of the MLP security by the Fund, and may cause taxable income or gains to be higher upon receipt of subsequent distributions from the MLP security by the Fund in later periods. The Fund’s corporate income tax liability may be materially affected by, and may fluctuate materially from year to year depending on, a number of factors relating to the Fund and/or its MLP or other investments, including the length of time the Fund has owned the MLP equity securities in its portfolio and the extent to which the Fund disposes of MLP equity securities during a particular year, including, if necessary, to meet Fund shareholder redemption requests.

The Fund’s tax liability will not be finally known until the Fund completes its annual tax return. The Fund’s tax estimates could vary substantially from the actual liability and therefore the final determination of the Fund’s actual tax liability may have a material impact on the Fund’s net asset value. See “Calculation of NAV Risk” below. The payment of corporate income taxes imposed on the Fund will decrease the value of the Fund’s shares and the amount of cash available for distribution to shareholders.

Due to the tax treatment of the Fund’s allocations and distributions from MLPs, as described above, HCM currently expects that a significant portion of the Fund’s distributions to shareholders will typically be treated as a return of capital in the hands of shareholders for U.S. federal income tax purposes (i.e., as distributions in excess of the Fund’s current and accumulated earnings and profits) and thus would not be subject U.S. federal income tax to the extent of the shareholder’s basis in its Fund shares. However, no assurance can be given in this regard and the extent to which the Fund is able to make return of capital distributions can vary materially from year to year.

Calculation of NAV Risk. 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 at a maximum rate of 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 may be liable for previously deferred taxes. If the Fund is required to sell portfolio securities to meet redemption requests, the Fund may recognize income and 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, capital loss carryforwards 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 daily net asset value; 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. 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. Such modifications, changes in generally accepted accounting principles or related guidance or interpretations thereof, limitations imposed on net operating and capital 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.

Tax Law Changes Risk. Changes in tax laws, regulations or interpretations of those laws or regulations in the future could adversely affect the Fund or its MLPs or other investments, and could adversely affect the Fund and its shareholders. In some cases, such changes could have retroactive effect.

Equity Securities Risk is the risk that stock prices will fall over short or long periods of time. In addition, common stocks represent a share of ownership in a company, and rank after bonds and preferred stock in their claim on the company’s assets in the event of bankruptcy.

Short Sales Risk is the risk of loss associated with any appreciation on the price of a security borrowed in connection with a short sale. The Fund may engage in short sales that are not made “against-the-box,” which means that the Fund may sell short securities even when they are not actually owned or otherwise covered at all times during the period the short position is open. Short sales that are not made “against-the-box” theoretically involve unlimited loss potential since the market price of securities sold short may continuously increase.

Derivatives Risk is the risk that an investment in derivatives, such as swaps, options and futures, may not correlate completely to the performance of the underlying securities or index and may be volatile, and may result in a loss greater than the principal amount invested. Equity derivatives may also be subject to liquidity risk, as well as the risk that the derivative is mispriced and that the value established for a derivative may be different than what would be produced through the use of another methodology or if it had been priced using market quotations. In addition, recent legislation has called for a new regulatory framework for the derivatives market. The impact of the new regulations are still unknown, but has the potential to increase the costs of using derivatives, may limit the availability of some forms of derivatives or the Fund’s ability to use derivatives, and may adversely affect the performance of some derivative instruments used by the Fund as well as the Fund’s ability to pursue its investment objective through the use of such instruments.

Counterparty Risk is the risk that a counterparty (the other party to a transaction or an agreement or the party with whom the Fund executes transactions) to a transaction with the Fund may be unable or unwilling to make timely principal, interest or settlement payments, or otherwise honor its obligations.

Leverage Risk is the risk associated with the use of leverage for investment purposes to create opportunities for greater total returns. Leverage may increase the risk of loss, cause fluctuations in the market value of the Fund’s portfolio to have disproportionately large effects or cause the net asset value (“NAV”) of the Fund generally to decline faster than it would otherwise.

Debt Securities Risk is the risk that the issuer of a debt security may fail to pay interest or principal when due, and that changes in market interest rates may reduce the value of debt securities or reduce the Fund’s returns. The Fund may invest in debt securities, principally below investment grade securities, but also including investment grade securities and other debt obligations. The Fund’s investments in high yield debt securities generally subject the Fund to greater risk than investments in securities with higher ratings. Such securities are regarded by the rating organizations as predominantly speculative with respect to capacity to pay interest and repay principal in accordance with the terms of the obligation.

Senior Loans Risk is the risk that the issuer or a senior may fail to pay interest or principal when due, and changes in market interest rates may reduce the value of the senior loan or reduce the Fund’s returns. The risks associated with senior loans are similar to the risks of high yield debt securities. Senior loans and other debt securities are also subject to the risk of price declines and to increases in prevailing interest rates. The Fund’s investments in senior loans are typically below investment grade and are considered speculative because of the credit risk of their issuers.

Mid-Cap Company Risk is the risk of investing in securities of mid-cap companies that could entail greater risks than investments in larger, more established companies. Mid-cap companies tend to have more narrow product lines, more limited financial resources and a more limited trading market for their stocks, as compared with larger companies. As a result, their stock prices may decline significantly as market conditions change.

Small-Cap Company Risk is the risk that investing in the securities of small-cap companies either directly or indirectly through investments in Underlying Funds may pose greater market and liquidity risks than larger, more established companies, because of limited product lines and/or operating history, limited financial resources, limited trading markets, and the potential lack of management depth. In addition, the securities of such companies are typically more volatile than securities of larger capitalization companies.

Foreign Investment Risk is the risk that investing in foreign (non-U.S.) securities either directly or indirectly may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies, due to smaller markets, differing reporting, accounting and auditing standards, nationalization, expropriation or confiscatory taxation, currency blockages and political changes or diplomatic developments. The costs of investing in many foreign markets are higher than the U.S. and investments may be less liquid. These risks may be heightened for emerging markets securities. Recently, additional risks have arisen related to the high levels of debt of various European countries such as Greece, Italy and Spain. One or more member states might exit the European Union, placing its currency and banking system in jeopardy. These problems, and related political and monetary efforts to address these problems, may increase the potential for market declines in one or more member states that can spread to global markets. These increased risks may persist and may result in greater volatility in the securities markets and the potential for impaired liquidity and valuation.

Currency Risk is the risk that fluctuation in exchange rates will adversely affect the value of the Fund’s foreign currency holdings and investments denominated in foreign currencies.

Hedging Risk is the risk that, although intended to limit or reduce investment risk, hedging strategies may also limit or reduce the potential for profit. There is no assurance that hedging strategies will be successful.

Market Risk is the risk that the value of securities owned by the Fund may go up or down, sometimes rapidly or unpredictably, due to factors affecting particular companies or the securities markets generally. The Fund’s share price will fluctuate with changes in the market value of its portfolio securities. Many factors can affect this value and you may lose money by investing in the Fund.

Emerging Markets Risk is the risk of investing in securities of companies located in emerging market countries, which primarily includes increased foreign investment risk. Emerging markets countries may have unstable governments and/or economies that are subject to sudden change, and may also lack the legal, business and social framework to support securities markets, which tends to make investments less liquid and more volatile.

Portfolio Turnover Risk is the risk that the Fund’s high portfolio turnover will increase its transaction costs and may result in increased realization by the Fund and thus lower after-tax performance, as well as reduce the amount of cash available for distribution to Fund shareholders.

Fixed Income Securities Risk is the risk that fixed income securities will decline in value because of changes in interest rates. The value of fixed income securities typically changes as interest rates fluctuate. During periods of rising interest rates, fixed income securities generally decline in value. Conversely, during periods of falling interest rates, fixed income securities generally rise in value. This kind of market risk is generally greater for a fund investing in fixed income securities with longer durations.

Credit Risk is the risk that the Fund could lose money if the issuer or guarantor of a fixed income security, or the counterparty of a derivatives contract or repurchase agreement, is unable or unwilling (or is perceived to be unable or unwilling) to make timely payment of principal and/or interest, or to otherwise honor its obligations.

Exchange-Traded Funds Risk is the risk that the ETFs in which the Fund invests will not be able to replicate exactly the performance of the indices they track and may result in a loss. In addition, shareholders bear both their proportionate share of the Fund’s expenses and similar expenses of the underlying investment company when the Fund invests in shares of another investment company.

Interest Rate Risk is the risk that fixed income securities will decline in value because of changes in interest rates. A fund with a longer average portfolio duration will be more sensitive to changes in interest rates than a fund with a shorter average portfolio duration.

Illiquid and Restricted Securities Risk is the risk that the Adviser or Sub-Adviser, as applicable, may not be able to sell illiquid or restricted securities at the price it would like or may have to sell them at a loss. Securities of non-U.S. issuers, and emerging markets securities in particular, are subject to illiquidity risk.

Legislation Risk is the risk that to the extent that state, federal or international regulators impose additional requirements or restrictions with respect to MLPs, the availability of MLP investments may be adversely affected.

Management Risk is the risk that the Adviser or Sub-Adviser may be incorrect in its assessment of the intrinsic value of the securities the Fund holds which may result in a decline in the value of Fund shares and failure to achieve its investment objective. The Fund’s portfolio managers use quantitative analyses and/or models. Any imperfections or limitations in such analyses and models could affect the ability of the portfolio managers to implement strategies.

Non-Diversification Risk is the risk that an investment in the Fund could fluctuate in value more than an investment in a diversified fund. As a non-diversified fund for purposes of the 1940 Act, the Fund may invest a larger portion of its assets in the securities of a few issuers than a diversified fund. A non-diversified fund’s investment in fewer issuers may result in the Fund’s shares being more sensitive to the economic results of those issuers.

Market Disruption Risk is the risk of unusual and extreme volatility in the equity and debt markets and in the prices of individual investments resulting from a period of acute stress recently experienced by domestic and international markets starting in the real estate and financial sectors and then moving to other sectors of the world economy. These market conditions could add to the risk of short-term volatility of the Fund.

Non-Payment Risk is the risk of non-payment of scheduled interest and/or principal with respect to debt securities. Non-payment would result in a reduction of income to the Fund, a reduction in the value of the obligation experiencing non-payment and a potential decrease in the NAV of the Fund.

Prepayment Risk is the risk that part or all of the principal of a debt security will be paid prior to the scheduled maturity. Pursuant to the relevant debt agreement, a borrower may be required, and may have the option at any time, to prepay the principal amount of a debt security, in some instances without incurring a prepayment penalty. In the event that like-yielding debt is not available in the marketplace, the prepayment of and subsequent reinvestment by the Fund in high yield debt could have a materially adverse affect on the yield of the Fund’s investment portfolio. Prepayments may have a beneficial impact on income due to receipt of prepayment penalties, if any, and any facility fees earned in connection with reinvestment.

Industry Specific Risk is the risk that the MLPs in which the Fund invests will be impacted by risks specific to the industry MLPs serve, including the following:

Fluctuations in commodity prices may impact the volume of commodities transported, processed, stored or distributed.

Reduced volumes of natural gas or other energy commodities available for transporting, processing, storing or distributing may affect the profitability of an MLP.

Slowdowns in new construction and acquisitions can limit growth potential.

A sustained reduced demand for crude oil, natural gas and refined petroleum products that could adversely affect MLP revenues and cash flows.

Depletion of the natural gas reserves or other commodities if not replaced, which could impact an MLP’s ability to make distributions.

Changes in the regulatory environment could adversely affect the profitability of MLPs.

Extreme weather and environmental hazards could impact the value of MLP securities.

Rising interest rates which could result in a higher cost of capital and drive investors into other investment opportunities.

Threats of attack by terrorists on energy assets could impact the market for MLPs.

Securities Market Risk is the risk that the value of securities owned by the Fund may go up or down, sometimes rapidly or unpredictably, due to factors affecting particular companies or the securities markets generally. A general downturn in the securities market may cause multiple asset classes to decline in value simultaneously.

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. As with any mutual fund, there is no guarantee that the Fund will achieve its goal.

Risk Lose Money [Text]

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When you sell Fund shares, they may be worth less than what you paid for them. Consequently, you can lose money by investing in the Fund.

Risk Nondiversified Status [Text]

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Non-Diversification Risk is the risk that an investment in the Fund could fluctuate in value more than an investment in a diversified fund. As a non-diversified fund for purposes of the 1940 Act, the Fund may invest a larger portion of its assets in the securities of a few issuers than a diversified fund. A non-diversified fund’s investment in fewer issuers may result in the Fund’s shares being more sensitive to the economic results of those issuers.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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The bar chart and the Average Annual Total Returns table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Class A Shares for each full calendar year and by showing how the Fund’s average annual returns compare with the returns of a broad-based securities market index. As with all mutual funds, the Fund’s past performance (before and after taxes) does not predict how the Fund will perform in the future. The Fund’s performance reflects applicable fee waivers and/or expense limitations in effect during the periods presented. Both the chart and the table assume the reinvestment of dividends and distributions. The bar chart does not reflect the deduction of applicable sales charges for Class A Shares. If sales charges had been reflected, the returns for Class A Shares would be less than those shown below. The returns of Class C, Class R and Class Y Shares would have substantially similar returns as Class A because the classes are invested in the same portfolio of securities and the annual returns would differ only to the extent that the classes have different expenses. Updated performance information is available by visiting www.pyxisais.com/Funds—-Performance or by calling 1-877- 665-1287.

Performance Information Illustrates Variability of Returns [Text]

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Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-877- 665-1287

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.pyxisais.com/Funds—-Performance

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, the Fund’s past performance (before and after taxes) does not predict how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Annual Total Returns

Bar Chart Narrative [Text Block]

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The bar chart shows the performance of the Fund's Class A shares as of December 31.

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The bar chart does not reflect the deduction of applicable sales charges for Class A Shares. If sales charges had been reflected, the returns for Class A Shares would be less than those shown below.

Bar Chart Closing [Text Block]

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The highest calendar quarter total return for Class A Shares of the Fund was 7.54% for the quarter ended September 30, 2012 and the lowest calendar quarter total return was -0.55% for the quarter ended December 31, 2012. The Fund’s year-to-date total return for Class A Shares through December 31, 2012 was 8.40%.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
(For the periods ended December 31, 2012)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. For example, after-tax returns shown are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns in the table above are shown for Class A Shares only and after-tax returns for other share classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases, average annual return after taxes on distributions and redemptions is higher than the average annual return before taxes and the average annual return after taxes on distributions because of realized losses that would have been sustained upon the sale of fund shares immediately after the relevant periods.

Performance Table Narrative

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After-tax returns in the table above are shown for Class A Shares only and after-tax returns for other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. For example, after-tax returns shown are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

In some cases, average annual return after taxes on distributions and redemptions is higher than the average annual return before taxes and the average annual return after taxes on distributions because of realized losses that would have been sustained upon the sale of fund shares immediately after the relevant periods. The calculations assume that an investor holds the shares in a taxable account, is in the actual historical highest individual federal marginal income tax bracket for each year and would have been able to immediately utilize the full realized loss to reduce his or her federal tax liability. However, actual individual tax results may vary and investors should consult their tax advisers regarding their personal tax situations.

Pyxis Energy MLP Fund | Class A

Maximum Sales Charge (Load) Imposed On Purchases (as a % of purchase price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum Deferred Sales Charge (Load) (as a % of the net asset value at the time of purchase or redemption, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends and other Distributions (as % of offering price)

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (as % of amount redeemed within two months or less after date of purchase)

rr_RedemptionFeeOverRedemption

2.00%

Exchange Fee (as % of amount exchanged within two months or less after date of purchase)

rr_ExchangeFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

0.35%

rr_OtherExpensesOverAssets

2.45%

^[1]

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

rr_ExpensesOverAssets

4.10%

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

2.55%

^[2]

rr_NetExpensesOverAssets

1.55%

rr_ExpenseExampleYear01

963

^[3]

rr_ExpenseExampleYear03

1,750

rr_ExpenseExampleYear05

2,551

Year to Date Return, Label

rr_ExpenseExampleYear10

4,618

2012

rr_AnnualReturn2012

8.40%

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Dec. 31, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

8.40%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest calendar quarter total return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

7.54%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest calendar quarter total return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(0.55%)

rr_AverageAnnualReturnYear01

2.14%

^[4]

rr_AverageAnnualReturnSinceInception

3.13%

^[4]

rr_AverageAnnualReturnInceptionDate

Dec. 01, 2011

^[4]

Pyxis Energy MLP Fund | Class C

Maximum Sales Charge (Load) Imposed On Purchases (as a % of purchase price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a % of the net asset value at the time of purchase or redemption, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[5]

Maximum Sales Charge (Load) Imposed on Reinvested Dividends and other Distributions (as % of offering price)

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (as % of amount redeemed within two months or less after date of purchase)

rr_RedemptionFeeOverRedemption

2.00%

Exchange Fee (as % of amount exchanged within two months or less after date of purchase)

rr_ExchangeFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

2.45%

^[1]

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

rr_ExpensesOverAssets

4.75%

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

2.55%

^[2]

rr_NetExpensesOverAssets

2.20%

rr_ExpenseExampleYear01

576

^[3]

rr_ExpenseExampleYear03

1,430

rr_ExpenseExampleYear05

2,390

rr_ExpenseExampleYear10

4,810

rr_ExpenseExampleNoRedemptionYear01

476

^[3]

rr_ExpenseExampleNoRedemptionYear03

1,430

rr_ExpenseExampleNoRedemptionYear05

2,390

rr_ExpenseExampleNoRedemptionYear10

4,810

rr_AverageAnnualReturnYear01

6.79%

^[4]

rr_AverageAnnualReturnSinceInception

8.23%

^[4]

rr_AverageAnnualReturnInceptionDate

Dec. 01, 2011

^[4]

Pyxis Energy MLP Fund | Class R

Maximum Sales Charge (Load) Imposed On Purchases (as a % of purchase price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a % of the net asset value at the time of purchase or redemption, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends and other Distributions (as % of offering price)

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (as % of amount redeemed within two months or less after date of purchase)

rr_RedemptionFeeOverRedemption

2.00%

Exchange Fee (as % of amount exchanged within two months or less after date of purchase)

rr_ExchangeFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

0.50%

rr_OtherExpensesOverAssets

2.45%

^[1]

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

rr_ExpensesOverAssets

4.25%

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

2.55%

^[2]

rr_NetExpensesOverAssets

1.70%

rr_ExpenseExampleYear01

427

^[3]

rr_ExpenseExampleYear03

1,289

rr_ExpenseExampleYear05

2,165

rr_ExpenseExampleYear10

4,413

rr_AverageAnnualReturnYear01

8.34%

^[4]

rr_AverageAnnualReturnSinceInception

8.77%

^[4]

rr_AverageAnnualReturnInceptionDate

Dec. 01, 2011

^[4]

Pyxis Energy MLP Fund | Class Y

Maximum Sales Charge (Load) Imposed On Purchases (as a % of purchase price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a % of the net asset value at the time of purchase or redemption, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends and other Distributions (as % of offering price)

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (as % of amount redeemed within two months or less after date of purchase)

rr_RedemptionFeeOverRedemption

2.00%

Exchange Fee (as % of amount exchanged within two months or less after date of purchase)

rr_ExchangeFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

2.45%

^[1]

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

rr_ExpensesOverAssets

3.75%

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

2.55%

^[2]

rr_NetExpensesOverAssets

1.20%

rr_ExpenseExampleYear01

377

^[3]

rr_ExpenseExampleYear03

1,146

rr_ExpenseExampleYear05

1,934

rr_ExpenseExampleYear10

3,993

rr_AverageAnnualReturnYear01

9.02%

^[4]

rr_AverageAnnualReturnSinceInception

9.51%

^[4]

rr_AverageAnnualReturnInceptionDate

Dec. 01, 2011

^[4]

Pyxis Energy MLP Fund | Return After Taxes on Distributions | Class A

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

(1.75%)

^[4]

rr_AverageAnnualReturnSinceInception

(0.50%)

^[4]

rr_AverageAnnualReturnInceptionDate

Dec. 01, 2011

^[4]

Pyxis Energy MLP Fund | Return After Taxes on Distributions and Redemptions | Class A

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

1.39%

^[4]

rr_AverageAnnualReturnSinceInception

0.59%

^[4]

rr_AverageAnnualReturnInceptionDate

Dec. 01, 2011

^[4]

Pyxis Energy MLP Fund | Alerian MLP Index (reflects no deduction for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

4.80%

^[4]

rr_AverageAnnualReturnSinceInception

9.96%

^[4]