Investment Risks - Center Coast Brookfield Midstream Focus Fund	Sep. 30, 2025
Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments.
Risk Nondiversified Status [Member]
Prospectus [Line Items]
Risk [Text Block]	Non-Diversification Risk. The Fund is classified as a “non-diversified” investment company under the 1940 Act, which means the Fund is not limited by the 1940 Act in the proportion of its assets that may be invested in the securities of a single issuer. As a non-diversified investment company, the Fund may invest in the securities of individual issuers to a greater degree than a diversified investment company. As a result, the Fund may be more vulnerable to events affecting a single issuer and therefore, subject to greater volatility than a fund that is more broadly diversified. Accordingly, an investment in the Fund may present greater risk to an investor than an investment in a diversified company.
Energy Industry Concentration Risks [Member]
Prospectus [Line Items]
Risk [Text Block]	Energy Industry Concentration Risks. A substantial portion of the companies in which the Fund invests are engaged primarily in the energy industry. As a result, the Fund will be concentrated in the energy industry, and will therefore be susceptible to adverse economic, environmental or regulatory occurrences affecting the energy industry. Risks associated with investments in companies operating in the energy industry include but are not limited to the following: Commodity Price Risk. Companies operating in the energy industry, including MLPs, may be affected by fluctuations in the prices of energy commodities. Fluctuations in energy commodity prices would directly impact companies that own such energy commodities and could indirectly impact MLP companies that engage in transportation, storage, processing, distribution or marketing of such energy commodities. Supply and Demand Risk. Companies operating in the energy industry, including MLPs, may be impacted by the levels of supply and demand for energy commodities, which may result in overproduction or underproduction. Depletion Risk. Energy companies, including MLPs, engaged in the exploration, development, management, gathering or production of energy commodities face the risk that commodity reserves are depleted over time, effecting the profitability of energy companies. Such companies seek to increase their reserves through expansion of their current businesses, acquisitions, further development of their existing sources of energy commodities or exploration of new sources of energy commodities or by entering into long-term contracts for additional reserves; however, there are risks associated with each of these potential strategies. Environmental and Regulatory Risk. Companies operating in the energy industry, including MLPs, are subject to significant regulation of their operations by federal, state and local governmental agencies. Additionally, voluntary initiatives and mandatory controls have been adopted or are being studied and evaluated, both in the United States and worldwide, to address current potentially hazardous environmental issues, including hydraulic fracturing and related waste disposal and geological concerns, as well as those that may develop in the future. Acquisition Risk. Companies owned by the Fund may depend on their ability to make acquisitions that increase adjusted operating surplus per unit in order to increase distributions to unit holders. Interest Rate Risk. Rising interest rates could increase the costs of capital thereby increasing operating costs and reducing the ability of companies operating in the energy industry, including MLPs, to carry out acquisitions or expansions in a cost-effective manner. Rising interest rates may also impact the price of the securities of companies operating in the energy industry as the yields on alternative investments increase. Weather Risk. Weather plays a role in the seasonality of some energy companies’ cash flows, and extreme weather conditions could adversely affect performance and cash flows of those companies. Catastrophic Event Risk. Companies operating in the energy industry, including MLPs, are subject to many dangers inherent in the production, exploration, management, transportation, processing and distribution of natural gas, natural gas liquids, crude oil, refined petroleum and petroleum products and other hydrocarbons. Any occurrence of a catastrophic event, such as a terrorist attack, could bring about a limitation, suspension or discontinuation of the operations of companies operating in the energy industry. Producer Bankruptcy Risk. A producer with whom a midstream MLP has entered into a fixed rate contract may become bankrupt or insolvent. In a fixed rate contract, a producer typically commits to transferring and/or processing a guaranteed minimum amount of the producer’s output through the midstream MLP’s facilities, together with an “acreage dedication” on the producer’s reserves, which is intended to survive the producer’s bankruptcy. Recent court cases have called into question whether acreage dedications are in fact bankruptcy-proof if they are not accompanied by an actual conveyance of a real property interest from the producer to the MLP. As a result, fixed rate contracts may be altered or voided by a bankrupt producer. Contracts are more likely to be altered or voided if they require the producer to pay above-market rates or contain other onerous terms, such as minimum revenue or volume commitments (“MVCs”). In general, if actual production is well below the MVC levels, then those contracts have a greater chance of being altered or voided in bankruptcy. If a fixed rate contract with a bankrupt producer is voided by the bankruptcy court, the midstream MLP would lose some or all of the revenues associated with that contract, which could result in a significant fall in the MLP’s share price and negatively affect the Fund’s net asset value (“NAV”). In this event, the MLP could seek recovery alongside other creditors, although the bankruptcy proceedings could be significantly delayed, and there is no guarantee that such claims would be granted.
Energy Infrastructure Industry Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Energy Infrastructure Industry Concentration Risk. Under normal circumstances, the Fund will concentrate its investments in the energy infrastructure industry. The primary risks inherent in investments in the energy infrastructure industry include the following: (1) the performance and level of distributions of MLPs can be affected by direct and indirect commodity price exposure; (2) a decrease in market demand for natural gas or other energy commodities could adversely affect MLP revenues or cash flows; (3) energy infrastructure assets deplete over time and must be replaced; and (4) a rising interest rate environment could increase an MLP’s cost of capital. The current presidential administration could significantly impact the regulation of United States financial markets and dramatically alter existing trade, tax, energy and infrastructure policies, among others. It is not possible to predict what, if any, changes will be made or their potential effect on the economy, securities markets, or financial stability of the United States, or on the energy, natural resources, real estate and other markets. Additionally, actions taken may impact different sectors of the energy and natural resources markets in disparate ways or may impact specific issuers in a given sector in differing ways. The Adviser cannot predict the effects of changing regulations or policies on the Fund’s portfolio, and the Fund may be affected by governmental action in ways that are not foreseeable. There is a possibility that such actions could have a significant adverse effect on the Fund and its ability to achieve its investment objective. At any time after the date of this Prospectus, legislation may be enacted that could negatively affect the assets of the Fund or the issuers of such assets. Legislation or regulation may change the way in which the Fund itself is regulated. The Adviser cannot predict the effects of any new governmental regulation that may be implemented, and there can be no assurance that any new governmental regulation will not adversely affect the Fund’s ability to achieve its investment objective.
Tax Risks [Member]
Prospectus [Line Items]
Risk [Text Block]	Tax Risks. Tax risks associated with investments in the Fund include but are not limited to the following: Tax Transition Risk. The Fund has historically not been eligible to elect to be treated as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”), due to its investments in MLPs exceeding the maximum level allowed for a RIC under the Code. However, beginning with the tax year that runs from October 1, 2025 through September 30, 2026, the Fund intends to invest in a manner consistent with, and otherwise comply with, the requirements to allow it to elect to be treated as a RIC, thereby avoiding taxation as a “C” corporation under the Internal Revenue Code. As a RIC beginning with the tax year that runs from October 1, 2025 through September 30, 2026, the Fund generally will not pay corporate-level federal income taxes on any ordinary income or capital gains that is distributed to shareholders as dividends. To obtain and maintain the federal income tax benefits of RIC status, the Fund must meet specified source-of-income and asset diversification requirements and distribute annually an amount equal to at least 90% of the sum of realized net short-term capital gains in excess of realized net long-term capital losses and net ordinary income, if any, out of assets legally available for distribution. In order to meet the tax requirements applicable to a RIC, the Fund will, beginning with December 31, 2025, the end of the first quarter of its first taxable year as a RIC, and as of the end of each quarter of its taxable year going forward, invest no more than 25% of the value of its total assets in the securities of MLPs and other entities treated as qualified publicly traded partnerships (generally defined as partnerships whose interests are publicly traded and that would not meet the source-of-income-requirements applicable to RICs). In order to comply with the asset diversification tests required to qualify as a RIC, the Fund may be required to dispose of a portion of its MLP investments. Such dispositions, if made during the Fund’s first taxable year as a RIC, could result in more taxable income to you than would otherwise be anticipated during the tax year. However, as discussed below, the Fund intends to recognize all of its net unrealized built-in gain in the current tax year in connection with the election to become a RIC. If the Fund recognizes a net gain as a result of the below election, the basis of the assets in the hands of the RIC will be adjusted to fair market value, which should reduce the amount of capital gains that would arise as a result of dispositions of such assets. A “C” corporation that elects to be treated as a RIC will incur a tax at the RIC level on its net built-in gain, measured at the effective time of the election, to the extent that it sells its built-in gain assets during the statutorily specified recognition period after the election, unless the “C” corporation makes or is treated as making a “deemed sale election” to recognize net unrealized gains (but not net unrealized losses) as of the end of its last taxable year as a “C” corporation. The Fund has made this deemed sale election. Such election is irrevocable. As a result of this election, the Fund is treated as if it sold its assets at fair market value at the end of the day on September 30, 2025 and will pay corporate level tax on any net built-in gain, provided that the Fund will be entitled to offset some of the taxable income generated as a result of this election by applying its net operating losses and capital loss carryforwards. Because the Fund, as a “C” corporation, has accrued a deferred tax liability for the future tax liability associated with the capital appreciation of its investments, payment of the taxes relating to the deemed sale election will not change the Fund’s NAV, but the Fund will need to raise the cash necessary to pay the tax due. Further, as a result of the deemed sale, the Fund may generate a significant amount of earnings and profits. The Fund will need to distribute the accumulated earnings and profits generated as a “C” corporation, including the earnings and profits generated as a result of the deemed sale election, to investors prior to the close of the first taxable year that the Fund is treated as a RIC. This distribution is expected to primarily be treated as qualified dividend income, which for non-corporate shareholders is taxed at the preferential federal income tax rates applicable to long-term capital gains. The amount of dividend income you receive as a result of the Fund electing to be treated as a RIC may be in excess of an ordinary course annual distribution from the Fund. To the extent you choose to reinvest your dividends, you will have a tax liability with no corresponding receipt of cash from the Fund to pay such liability. You should ensure you have sufficient cash flow from other sources to pay all tax liabilities resulting from a distribution from the Fund before choosing to reinvest your dividends. Dividend Distribution Risk. In order to qualify as a RIC, the Fund must meet certain dividend distribution requirements on an annual basis, generally equal to at least 90% of its net investment company taxable income and 90% of its tax-exempt interest income for each taxable year. The Fund intends to make distributions each year in amounts to satisfy these requirements and thereby qualify for a deduction for such dividends paid to shareholders but there is no assurance the Fund will be able to pay such dividend distributions each taxable year. In addition, the Fund generally expects to make sufficient dividend distributions to avoid the nondeductible 4% federal excise tax applicable to certain undistributed net investment company income but there is no assurance that such dividend distributions will be made each year. In addition to the required dividend distributions to qualify for and maintain RIC status and avoid corporate income tax, the Fund’s dividend distribution policy is intended to provide consistent monthly distributions to its shareholders at a variable rate on a quarterly basis. The distribution payments will be fixed each quarter to maintain a stable distribution rate for such quarter, after which the distribution rate will be adjusted on a quarterly basis at a rate that is approximately equal to the distribution rate the Fund receives from the MLPs and other securities in which it invests, including income, if any, without offset for the expenses of the Fund. The amount of the Fund’s distributions is based on, among other considerations, cash and stock distributions the Fund actually receives from portfolio investments, including returns of capital, and special cash payments, if any, received to offset distribution reductions resulting from MLP restructurings. The Fund’s distributions also give consideration to the estimated future cash flows of investments held by the Fund. The Fund is not required to make such distributions and, consequently, the Fund could decide, at its discretion, not to make such distributions or not to make distributions in the amount described above because of market or other conditions affecting or relevant to the Fund. Because of differences between the time that monthly distributions are paid by the Fund and the time quarterly distributions are received from the MLPs, and because the Fund’s distribution policy takes into consideration estimated future cash flows from its underlying holdings, in order to permit the Fund to make consistent monthly distributions to its shareholders at a variable rate on a quarterly basis, the Fund’s distributions may exceed or be below the amount the Fund actually receives from its portfolio investments. Additionally, since the Fund’s distribution rate is not derived from the Fund’s investment income or loss, the Fund’s distributions do not represent yield or investment return on the Fund’s portfolio. For these reasons, the Fund may over various periods of time pay dividends in excess of the distributions paid by the Fund’s underlying MLP investments. While the Fund attempts to manage the portfolio to generate positive investment returns, the Fund may not be successful in generating sufficient investment income, gains and incremental cash flow, in excess of Fund expenses, to make up for any shortfall between the distributions paid by the Fund and the distributions received by the Fund from its investments. To the extent that the distributions paid exceed the distributions the Fund has received, the distributions will reduce the Fund’s net assets. Consequently, the Fund may maintain cash reserves, borrow or may be required to sell certain investments at times when it would not otherwise be desirable to do so in order to pay the expenses of the Fund. The Fund is not required to make such distributions and, as a result, the Fund could in the future decide not to make such distributions or not to make distributions at a rate that over time is similar to the distribution rate that it receives from the MLPs in which it invests. It is expected that a portion of the distributions made by the Fund to shareholders will be treated as non-taxable returns of capital. A return of capital effectively represents a return of a shareholder’s investment in Fund shares (net of fees thereon), reduces the shareholders tax basis in its shares of the Fund (but not below zero), and is different from and should not be confused with a dividend from current and accumulated earnings and profits. For a U.S. shareholder, any portion of distributions that is considered a return of capital is not currently taxable, but instead reduces the shareholder’s tax basis in Fund shares (until the tax basis reaches zero). Reducing a shareholder’s tax basis in Fund shares will generally increase the amount of gain (or decrease the amount of loss) on a subsequent sale or exchange of the shares. Any gain on a shareholder’s sale or exchange of Fund shares is generally taxable to the shareholder as capital gain. Thus, distributions considered return of capital are often described as tax deferred. Any distributions from the Fund in excess of a shareholder’s tax basis in shares of the Fund and in excess of the shareholder’s portion of the Fund’s current and accumulated earnings and profits will generally be taxable to the shareholder as capital gains. Any portion of distributions that is not considered return of capital may be characterized as qualified dividend income for U.S. federal income tax purposes depending on its source. Qualified dividend income is generally taxable to noncorporate shareholders at reduced rates in the year received and does not reduce a shareholder’s adjusted tax basis in Fund shares. The portion of the Fund’s distributions that may be classified as return of capital is uncertain and can be materially impacted by events that are not subject to the control of the Adviser (e.g., mergers, acquisitions, reorganizations and other capital transactions occurring at the individual MLP level, changes in the tax characterization of distributions received from the MLP investments held by the Fund, or changes in tax laws). Gains and other income realized by the Fund may also cause distributions from the Fund to be treated as taxable dividends rather than as return of capital distributions. Because of these factors, the portion of the Fund’s distributions that is considered return of capital may vary materially from year to year. Accordingly, there is no guarantee that future distributions will maintain the same classification for tax purposes as past distributions. MLP Tax Risk. As a RIC for tax purposes, the Fund will comply with the 25% limit of its investments in MLPs and other assets in order to meet the Code’s RIC asset diversification tests. Nonetheless, it is expected that a material amount of the Fund’s investments will be in MLPs at various times. A change in current tax law, or a change in the business of a given MLP, could result in an MLP being treated as a corporation or other form of taxable entity for U.S. federal income tax purposes, which would result in such MLP being required to pay U.S. federal corporate income tax, excise tax or other form of tax on its taxable income. The classification of an MLP as a corporation or other form of taxable entity for U.S. federal income tax purposes could have the effect of reducing the amount of cash available for distribution by the MLP and could cause any such distributions received by the Fund to be taxed as dividend income, return of capital, or capital gain. Thus, if any of the MLPs owned by the Fund were treated as corporations or other form of taxable entity for U.S. federal income tax purposes, the after-tax return to the Fund with respect to its investment in such MLPs could be materially reduced which could cause a material decrease in the NAV of the Fund’s shares. Historically, MLPs have been able to offset a significant portion of their taxable income with tax deductions, including depletion, depreciation and amortization expense deductions. The law could change to eliminate or reduce such tax deductions, which effectively shelter or defer taxable income recognized by the Fund. The elimination or reduction of such tax benefits could significantly reduce the value of the MLPs held by the Fund, which would similarly reduce the Fund’s NAV, and could cause a greater portion of the income and gain allocated to the Fund to be subject to U.S. federal, state and local corporate income taxes, which would reduce the amount the Fund can distribute to shareholders and could increase the percentage of Fund distributions treated as dividends instead of tax advantaged return of capital. Depreciation or other cost recovery deductions passed through to the Fund from investments in MLPs in a given year generally will reduce the Fund’s taxable income (and earnings and profits), but those deductions may be recaptured in the Fund’s taxable income (and earnings and profits) in subsequent years when the MLPs dispose of their assets or when the Fund disposes of its interests in the MLPs. When deductions are recaptured, distributions to the Fund’s shareholders may be taxable, even though the shareholders at the time of the distribution might not have held shares in the Fund at the time the deductions were taken by the Fund, and even though the Fund’s shareholders at the time of the distribution will not have corresponding economic gain on their shares at the time of the distribution.
Inflation Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the value of money. As inflation increases, the real value of the Fund’s shares and distributions thereon can decline. Inflation risk is linked to increases in the prices of goods and services and a decrease in the purchasing power of money. Inflation often is accompanied or followed by a recession, or period of decline in economic activity, which may include job loss and other hardships and may cause the value of securities to go down generally. Inflation risk is greater for fixed-income instruments with longer maturities. In addition, this risk may be significantly elevated compared to normal conditions because of recent monetary policy measures and the current interest rate environment.
Risks of Investing in MLP Units [Member]
Prospectus [Line Items]
Risk [Text Block]	Risks of Investing in MLP Units. An investment in MLP units involves additional risks from a similar investment in equity securities, such as common stock, of a corporation. As compared to common shareholders of a corporation, holders of MLP units have more limited control and limited rights to vote on matters affecting the partnership. Additional risks inherent to investments in MLP units include cash flow risk, tax risk, risk associated with a potential conflict of interest between unit holders and the MLP’s general partner, and capital markets risk.
Utility Sector Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Utility Sector Risk. The Fund is subject to risks of the utility sector, such as changing commodity prices, government regulation stipulating rates charged by utilities, increased tariffs, changes in tax laws, interest and exchange rate fluctuations, liabilities for environmental damage and changes in the cost of providing specific utility services, due to its concentration in utility securities. The utility sector is also subject to potential terrorist attacks, natural disasters and severe weather conditions, as well as regulatory and operational burdens associated with the operation and maintenance of nuclear facilities. When interest rates go up, the value of securities issued by utility companies historically has gone down. Although the average dividend yield of utility sector stocks has been higher than those of other companies, the total return of utility securities has historically underperformed those of industrial companies. In most countries and localities, the utility sector is regulated by governmental entities, which can increase costs and delays for new projects and make it difficult to pass increased costs on to consumers. In certain areas, deregulation of utilities has resulted in increased competition and reduced profitability for certain companies, and increased the risk that a particular company will become bankrupt or fail completely. Reduced profitability, as well as new uses for or additional need of funds (such as for expansion, operations or stock buybacks), could result in reduced dividend payout rates for utility companies. In addition, utility companies face the risk of increases in the cost and reduced availability of fuel (such as oil, coal, natural gas or nuclear energy) and potentially high interest costs for borrowing to finance new projects. Energy conservation and changes in climate policy may also have a significant adverse impact on the revenues and expenses of utility companies.
Equity Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Equity Securities Risk. MLP units and other equity securities held by the Fund can be affected by general market or economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, changes in interest rates, and the particular circumstances and performance of particular companies whose securities the Fund holds.
Cash Flow Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Cash Flow Risk. The Fund expects that a portion of the cash flow it receives will be derived from its investments in MLPs. The amount and tax characterization of cash available for distribution by an MLP depends upon the amount of cash generated by such entity’s operations. Cash available for distribution by MLPs may vary widely from quarter to quarter and will be affected by various factors affecting the entity’s operations.
Issuer Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Issuer Risk. Issuer risk is the risk that the value of a security may decline for a reason directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or service.
Management Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Management Risk. The Fund has an actively managed portfolio. The Adviser applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.
Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. MLP common units and equity securities of MLP affiliates, including I-Shares, often trade on national securities exchanges. However, certain securities, including those of issuers with smaller capitalizations, may trade less frequently. The market movements of such securities with limited trading volumes may be more abrupt or erratic than those with higher trading volumes. As a result of the limited liquidity of such securities, the Fund could have greater difficulty selling such securities at the time and price that the Fund would like and may be limited in its ability to make alternative investments. This may also adversely affect the Fund’s ability to remit dividend payments to shareholders. The Fund may not purchase or hold securities that are illiquid or are otherwise not readily marketable if, in the aggregate, more than 15% of its net assets would be invested in illiquid securities. Illiquid securities are securities that cannot be disposed of within seven days in the ordinary course of business at approximately the value at which the Fund has valued the securities.
Fixed Income Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Fixed Income Risk. The value of fixed income securities fluctuate based on a variety of factors including interest rates, the maturity of the security, the creditworthiness of an issuer, the liquidity of the security and general bond market conditions. At times there may be an imbalance of supply and demand in the fixed income markets which could result in greater price volatility, less liquidity, wider trading spreads and a lack of price transparency. Interest rate changes may be influenced by a number of factors, including government and central banking authority actions, inflation expectations, and supply and demand. Generally, when interest rates rise, the value of fixed income securities can be expected to decline. The longer the maturity of a fixed income security, the greater its sensitivity to interest rate changes. The Fund may be subject to heightened interest rate risk as a result of changes in economic conditions, inflation and government monetary policy, such as changes in the federal funds rate. There is no way of predicting the frequency or quantum of potential interest rate changes. The value of fixed income securities may also be dependent on the creditworthiness of the issuer of such securities. A deterioration in the financial condition of an issuer or a deterioration in general economic conditions could cause an issuer to fail to pay principal or interest when due.
“Junk” Bond Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	“Junk” Bond Risk. Debt securities that are below investment grade, called “junk bonds,” generally offer a higher yield than is offered by higher rated securities, but are speculative, have a higher risk of default or are already in default, tend to be less liquid and are more difficult to value than higher grade securities. Junk bonds tend to be volatile and more susceptible to adverse events and negative sentiments.
Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Risk. Global economies and financial markets are increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in general financial markets, a particular financial market, or other asset classes due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. For example, the ongoing armed conflicts between Russia and Ukraine in Europe and among Israel, Hamas and other militant groups in the Middle East have caused and may continue to cause significant market disruptions. As a result, there is significant uncertainty around how these conflicts will evolve, which may result in market volatility and may have long-lasting impacts on both the U.S. and global financial markets.
Small Capitalization Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Small Capitalization Risk. Small capitalization companies often have limited product lines, markets, distribution channels or financial resources; and the management of such companies may be dependent upon one or a few key people. The market movements of equity securities issued by MLPs with smaller capitalizations may be more abrupt or erratic than the market movements of equity securities of larger, more established companies or the stock market in general. Historically, smaller capitalization companies have sometimes gone through extended periods when they did not perform as well as larger companies. In addition, equity securities of smaller capitalization companies generally are less liquid than those of larger companies. This means that the Fund could have greater difficulty selling such securities at the time and price than the Fund would like.
Affiliated Fund Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Affiliated Fund Risk. The Fund may invest in investment companies that are advised by the Adviser or an affiliated investment adviser (“affiliated funds”). Investing in affiliated funds presents conflicts of interest. The Adviser has an incentive to invest the Fund’s assets in an affiliated fund because the Adviser or an affiliated adviser receives advisory fees from the affiliated fund. The Adviser or an affiliated adviser may also derive indirect benefits, such as increased assets under management, as a result of the Fund investing in an affiliated fund, which benefits would not be present if the Fund instead invested in an unaffiliated fund. In addition, the Adviser has an incentive to consider the effect on an affiliated fund in determining whether, and under what circumstances, to purchase or sell shares of the affiliated fund. The Adviser seeks to mitigate such conflicts by waiving and/or reimbursing its advisory fee with respect to the amount of the Fund’s net assets invested in affiliated funds.

Investment Risks - Center Coast Brookfield Midstream Focus Fund

Sep. 30, 2025

You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments.

Prospectus [Line Items]

Risk [Text Block]

Non-Diversification Risk. The Fund is classified as a “non-diversified” investment company under the 1940 Act, which means the Fund is not limited by the 1940 Act in the proportion of its assets that may be invested in the securities of a single issuer. As a non-diversified investment company, the Fund may invest in the securities of individual issuers to a greater degree than a diversified investment company. As a result, the Fund may be more vulnerable to events affecting a single issuer and therefore, subject to greater volatility than a fund that is more broadly diversified. Accordingly, an investment in the Fund may present greater risk to an investor than an investment in a diversified company.

Energy Industry Concentration Risks [Member]

Prospectus [Line Items]

Risk [Text Block]

Energy Industry Concentration Risks. A substantial portion of the companies in which the Fund invests are engaged primarily in the energy industry. As a result, the Fund will be concentrated in the energy industry, and will therefore be susceptible to adverse economic, environmental or regulatory occurrences affecting the energy industry. Risks associated with investments in companies operating in the energy industry include but are not limited to the following:

Commodity Price Risk. Companies operating in the energy industry, including MLPs, may be affected by fluctuations in the prices of energy commodities. Fluctuations in energy commodity prices would directly impact companies that own such energy commodities and could indirectly impact MLP companies that engage in transportation, storage, processing, distribution or marketing of such energy commodities.

Supply and Demand Risk. Companies operating in the energy industry, including MLPs, may be impacted by the levels of supply and demand for energy commodities, which may result in overproduction or underproduction.

Depletion Risk. Energy companies, including MLPs, engaged in the exploration, development, management, gathering or production of energy commodities face the risk that commodity reserves are depleted over time, effecting the profitability of energy companies. Such companies seek to increase their reserves through expansion of their current businesses, acquisitions, further development of their existing sources of energy commodities or exploration of new sources of energy commodities or by entering into long-term contracts for additional reserves; however, there are risks associated with each of these potential strategies.

Environmental and Regulatory Risk. Companies operating in the energy industry, including MLPs, are subject to significant regulation of their operations by federal, state and local governmental agencies. Additionally, voluntary initiatives and mandatory controls have been adopted or are being studied and evaluated, both in the United States and worldwide, to address current potentially hazardous environmental issues, including hydraulic fracturing and related waste disposal and geological concerns, as well as those that may develop in the future.

Acquisition Risk. Companies owned by the Fund may depend on their ability to make acquisitions that increase adjusted operating surplus per unit in order to increase distributions to unit holders.

Interest Rate Risk. Rising interest rates could increase the costs of capital thereby increasing operating costs and reducing the ability of companies operating in the energy industry, including MLPs, to carry out acquisitions or expansions in a cost-effective manner. Rising interest rates may also impact the price of the securities of companies operating in the energy industry as the yields on alternative investments increase.

Weather Risk. Weather plays a role in the seasonality of some energy companies’ cash flows, and extreme weather conditions could adversely affect performance and cash flows of those companies.

Catastrophic Event Risk. Companies operating in the energy industry, including MLPs, are subject to many dangers inherent in the production, exploration, management, transportation, processing and distribution of natural gas, natural gas liquids, crude oil, refined petroleum and petroleum products and other hydrocarbons. Any occurrence of a catastrophic event, such as a terrorist attack, could bring about a limitation, suspension or discontinuation of the operations of companies operating in the energy industry.

Producer Bankruptcy Risk. A producer with whom a midstream MLP has entered into a fixed rate contract may become bankrupt or insolvent. In a fixed rate contract, a producer typically commits to transferring and/or processing a guaranteed minimum amount of the producer’s output through the midstream MLP’s facilities, together with an “acreage dedication” on the producer’s reserves, which is intended to survive the producer’s bankruptcy. Recent court cases have called into question whether acreage dedications are in fact bankruptcy-proof if they are not accompanied by an actual conveyance of a real property interest from the producer to the MLP. As a result, fixed rate contracts may be altered or voided by a bankrupt producer. Contracts are more likely to be altered or voided if they require the producer to pay above-market rates or contain other onerous terms, such as minimum revenue or volume commitments (“MVCs”). In general, if actual production is well below the MVC levels, then those contracts have a greater chance of being altered or voided in bankruptcy. If a fixed rate contract with a bankrupt producer is voided by the bankruptcy court, the midstream MLP would lose some or all of the revenues associated with that contract, which could result in a significant fall in the MLP’s share price and negatively affect the Fund’s net asset value (“NAV”). In this event, the MLP could seek recovery alongside other creditors, although the bankruptcy proceedings could be significantly delayed, and there is no guarantee that such claims would be granted.

Energy Infrastructure Industry Concentration Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Energy Infrastructure Industry Concentration Risk. Under normal circumstances, the Fund will concentrate its investments in the energy infrastructure industry. The primary risks inherent in investments in the energy infrastructure industry include the following: (1) the performance and level of distributions of MLPs can be affected by direct and indirect commodity price exposure; (2) a decrease in market demand for natural gas or other energy commodities could adversely affect MLP revenues or cash flows; (3) energy infrastructure assets deplete over time and must be replaced; and (4) a rising interest rate environment could increase an MLP’s cost of capital.

The current presidential administration could significantly impact the regulation of United States financial markets and dramatically alter existing trade, tax, energy and infrastructure policies, among others. It is not possible to predict what, if any, changes will be made or their potential effect on the economy, securities markets, or financial stability of the United States, or on the energy, natural resources, real estate and other markets. Additionally, actions taken may impact different sectors of the energy and natural resources markets in disparate ways or may impact specific issuers in a given sector in differing ways. The Adviser cannot predict the effects of changing regulations or policies on the Fund’s portfolio, and the Fund may be affected by governmental action in ways that are not foreseeable. There is a possibility that such actions could have a significant adverse effect on the Fund and its ability to achieve its investment objective. At any time after the date of this Prospectus, legislation may be enacted that could negatively affect the assets of the Fund or the issuers of such assets. Legislation or regulation may change the way in which the Fund itself is regulated. The Adviser cannot predict the effects of any new governmental regulation that may be implemented, and there can be no assurance that any new governmental regulation will not adversely affect the Fund’s ability to achieve its investment objective.

Tax Risks [Member]

Prospectus [Line Items]

Risk [Text Block]

Tax Risks. Tax risks associated with investments in the Fund include but are not limited to the following:

Tax Transition Risk. The Fund has historically not been eligible to elect to be treated as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”), due to its investments in MLPs exceeding the maximum level allowed for a RIC under the Code. However, beginning with the tax year that runs from October 1, 2025 through September 30, 2026, the Fund intends to invest in a manner consistent with, and otherwise comply with, the requirements to allow it to elect to be treated as a RIC, thereby avoiding taxation as a “C” corporation under the Internal Revenue Code. As a RIC beginning with the tax year that runs from October 1, 2025 through September 30, 2026, the Fund generally will not pay corporate-level federal income taxes on any ordinary income or capital gains that is distributed to shareholders as dividends. To obtain and maintain the federal income tax benefits of RIC status, the Fund must meet specified source-of-income and asset diversification requirements and distribute annually an amount equal to at least 90% of the sum of realized net short-term capital gains in excess

of realized net long-term capital losses and net ordinary income, if any, out of assets legally available for distribution. In order to meet the tax requirements applicable to a RIC, the Fund will, beginning with December 31, 2025, the end of the first quarter of its first taxable year as a RIC, and as of the end of each quarter of its taxable year going forward, invest no more than 25% of the value of its total assets in the securities of MLPs and other entities treated as qualified publicly traded partnerships (generally defined as partnerships whose interests are publicly traded and that would not meet the source-of-income-requirements applicable to RICs). In order to comply with the asset diversification tests required to qualify as a RIC, the Fund may be required to dispose of a portion of its MLP investments. Such dispositions, if made during the Fund’s first taxable year as a RIC, could result in more taxable income to you than would otherwise be anticipated during the tax year. However, as discussed below, the Fund intends to recognize all of its net unrealized built-in gain in the current tax year in connection with the election to become a RIC. If the Fund recognizes a net gain as a result of the below election, the basis of the assets in the hands of the RIC will be adjusted to fair market value, which should reduce the amount of capital gains that would arise as a result of dispositions of such assets.

A “C” corporation that elects to be treated as a RIC will incur a tax at the RIC level on its net built-in gain, measured at the effective time of the election, to the extent that it sells its built-in gain assets during the statutorily specified recognition period after the election, unless the “C” corporation makes or is treated as making a “deemed sale election” to recognize net unrealized gains (but not net unrealized losses) as of the end of its last taxable year as a “C” corporation. The Fund has made this deemed sale election. Such election is irrevocable. As a result of this election, the Fund is treated as if it sold its assets at fair market value at the end of the day on September 30, 2025 and will pay corporate level tax on any net built-in gain, provided that the Fund will be entitled to offset some of the taxable income generated as a result of this election by applying its net operating losses and capital loss carryforwards. Because the Fund, as a “C” corporation, has accrued a deferred tax liability for the future tax liability associated with the capital appreciation of its investments, payment of the taxes relating to the deemed sale election will not change the Fund’s NAV, but the Fund will need to raise the cash necessary to pay the tax due. Further, as a result of the deemed sale, the Fund may generate a significant amount of earnings and profits. The Fund will need to distribute the accumulated earnings and profits generated as a “C” corporation, including the earnings and profits generated as a result of the deemed sale election, to investors prior to the close of the first taxable year that the Fund is treated as a RIC. This distribution is expected to primarily be treated as qualified dividend income, which for non-corporate shareholders is taxed at the preferential federal income tax rates applicable to long-term capital gains. The amount of dividend income you receive as a result of the Fund electing to be treated as a RIC may be in excess of an ordinary course annual distribution from the Fund. To the extent you choose to reinvest your dividends, you will have a tax liability with no corresponding receipt of cash from the Fund to pay such liability. You should ensure you have sufficient cash flow from other sources to pay all tax liabilities resulting from a distribution from the Fund before choosing to reinvest your dividends.

Dividend Distribution Risk. In order to qualify as a RIC, the Fund must meet certain dividend distribution requirements on an annual basis, generally equal to at least 90% of its net investment company taxable income and 90% of its tax-exempt interest income for each taxable year. The Fund intends to make distributions each year in amounts to satisfy these requirements and thereby qualify for a deduction for such dividends paid to shareholders but there is no assurance the Fund will be able to pay such dividend distributions each taxable year. In addition, the Fund generally expects to make sufficient dividend distributions to avoid the nondeductible 4% federal excise tax applicable to certain undistributed net investment company income but there is no assurance that such dividend distributions will be made each year. In addition to the required dividend distributions to qualify for and maintain RIC status and avoid corporate income tax, the Fund’s dividend distribution policy is intended to provide consistent monthly distributions to its shareholders at a variable rate on a quarterly basis. The distribution payments will be fixed each quarter to maintain a stable distribution rate for such quarter, after which the distribution rate will be adjusted on a quarterly basis at a rate that is approximately equal to the distribution rate the Fund receives from the MLPs and other securities in which it invests, including income, if any, without offset for the expenses of the Fund. The amount of the Fund’s distributions is based on, among other considerations, cash and stock distributions the Fund actually receives from portfolio investments, including returns of capital, and special cash payments, if any, received to offset distribution reductions resulting from MLP restructurings. The Fund’s distributions also give consideration to the estimated future cash flows of investments held by the Fund. The Fund is not required to make such distributions and, consequently, the Fund could decide, at its discretion, not to make such distributions or not to make distributions in the amount described above because of market or other conditions affecting or relevant to the Fund.

Because of differences between the time that monthly distributions are paid by the Fund and the time quarterly distributions are received from the MLPs, and because the Fund’s distribution policy takes into consideration estimated future cash flows from its underlying holdings, in order to permit the Fund to make consistent monthly distributions to its shareholders at a variable rate on a quarterly basis, the Fund’s distributions may exceed or be below the amount the Fund actually receives from its portfolio investments. Additionally, since the Fund’s distribution rate is not derived from the Fund’s investment income or loss, the Fund’s distributions do not represent yield or investment return on the Fund’s portfolio. For these reasons, the Fund may over various periods of time pay dividends in excess of the distributions paid by the Fund’s underlying MLP investments. While the Fund attempts to manage the portfolio to generate positive investment returns, the Fund may not be successful in generating sufficient investment income, gains and incremental cash flow, in excess of Fund expenses, to make up for any shortfall between the distributions paid by the Fund and the distributions received by the Fund from its investments. To the extent that the distributions paid exceed the distributions the Fund has received, the distributions will reduce the Fund’s net assets. Consequently, the Fund may maintain cash reserves, borrow or may be required to sell certain investments at times when it would not otherwise be desirable to do so in order to pay the expenses of the Fund. The Fund is not required to make such distributions and, as a result, the Fund could in the future decide not to make such distributions or not to make distributions at a rate that over time is similar to the distribution rate that it receives from the MLPs in which it invests.

It is expected that a portion of the distributions made by the Fund to shareholders will be treated as non-taxable returns of capital. A return of capital effectively represents a return of a shareholder’s investment in Fund shares (net of fees thereon), reduces the shareholders tax basis in its shares of the Fund (but not below zero), and is different from and should not be confused with a dividend from current and accumulated earnings and profits. For a U.S. shareholder, any portion of distributions that is considered a return of capital is not currently taxable, but instead reduces the shareholder’s tax basis in Fund shares (until the tax basis reaches zero). Reducing a shareholder’s tax basis in Fund shares will generally increase the amount of gain (or decrease the amount of loss) on a subsequent sale or exchange of the shares. Any gain on a shareholder’s sale or exchange of Fund shares is generally taxable to the shareholder as capital gain. Thus, distributions considered return of capital are often described as tax deferred. Any distributions from the Fund in excess of a shareholder’s tax basis in shares of the Fund and in excess of the shareholder’s portion of the Fund’s current and accumulated earnings and profits will generally be taxable to the shareholder as capital gains. Any portion of distributions that is not considered return of capital may be characterized as qualified dividend income for U.S. federal income tax purposes depending on its source. Qualified dividend income is generally taxable to noncorporate shareholders at reduced rates in the year received and does not reduce a shareholder’s adjusted tax basis in Fund shares. The portion of the Fund’s distributions that may be classified as return of capital is uncertain and can be materially impacted by events that are not subject to the control of the Adviser (e.g., mergers, acquisitions, reorganizations and other capital transactions occurring at the individual MLP level, changes in the tax characterization of distributions received from the MLP investments held by the Fund, or changes in tax laws). Gains and other income realized by the Fund may also cause distributions from the Fund to be treated as taxable dividends rather than as return of capital distributions. Because of these factors, the portion of the Fund’s distributions that is considered return of capital may vary materially from year to year. Accordingly, there is no guarantee that future distributions will maintain the same classification for tax purposes as past distributions.

MLP Tax Risk. As a RIC for tax purposes, the Fund will comply with the 25% limit of its investments in MLPs and other assets in order to meet the Code’s RIC asset diversification tests. Nonetheless, it is expected that a material amount of the Fund’s investments will be in MLPs at various times. A change in current tax law, or a change in the business of a given MLP, could result in an MLP being treated as a corporation or other form of taxable entity for U.S. federal income tax purposes, which would result in such MLP being required to pay U.S. federal corporate income tax, excise tax or other form of tax on its taxable income. The classification of an MLP as a corporation or other form of taxable entity for U.S. federal income tax purposes could have the effect of reducing the amount of cash available for distribution by the MLP and could cause any such distributions received by the Fund to be taxed as dividend income, return of capital, or capital gain. Thus, if any of the MLPs owned by the Fund were treated as corporations or other form of taxable entity for U.S. federal income tax purposes, the after-tax return to the Fund with respect to its investment in such MLPs could be materially reduced which could cause a material decrease in the NAV of the Fund’s shares.

Historically, MLPs have been able to offset a significant portion of their taxable income with tax deductions, including depletion, depreciation and amortization expense deductions. The law could change to eliminate or reduce such tax deductions, which effectively shelter or defer taxable income recognized by the Fund. The elimination or reduction

of such tax benefits could significantly reduce the value of the MLPs held by the Fund, which would similarly reduce the Fund’s NAV, and could cause a greater portion of the income and gain allocated to the Fund to be subject to U.S. federal, state and local corporate income taxes, which would reduce the amount the Fund can distribute to shareholders and could increase the percentage of Fund distributions treated as dividends instead of tax advantaged return of capital.

Depreciation or other cost recovery deductions passed through to the Fund from investments in MLPs in a given year generally will reduce the Fund’s taxable income (and earnings and profits), but those deductions may be recaptured in the Fund’s taxable income (and earnings and profits) in subsequent years when the MLPs dispose of their assets or when the Fund disposes of its interests in the MLPs. When deductions are recaptured, distributions to the Fund’s shareholders may be taxable, even though the shareholders at the time of the distribution might not have held shares in the Fund at the time the deductions were taken by the Fund, and even though the Fund’s shareholders at the time of the distribution will not have corresponding economic gain on their shares at the time of the distribution.

Inflation Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the value of money. As inflation increases, the real value of the Fund’s shares and distributions thereon can decline. Inflation risk is linked to increases in the prices of goods and services and a decrease in the purchasing power of money. Inflation often is accompanied or followed by a recession, or period of decline in economic activity, which may include job loss and other hardships and may cause the value of securities to go down generally. Inflation risk is greater for fixed-income instruments with longer maturities. In addition, this risk may be significantly elevated compared to normal conditions because of recent monetary policy measures and the current interest rate environment.

Risks of Investing in MLP Units [Member]

Prospectus [Line Items]

Risk [Text Block]

Risks of Investing in MLP Units. An investment in MLP units involves additional risks from a similar investment in equity securities, such as common stock, of a corporation. As compared to common shareholders of a corporation, holders of MLP units have more limited control and limited rights to vote on matters affecting the partnership. Additional risks inherent to investments in MLP units include cash flow risk, tax risk, risk associated with a potential conflict of interest between unit holders and the MLP’s general partner, and capital markets risk.

Utility Sector Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Utility Sector Risk. The Fund is subject to risks of the utility sector, such as changing commodity prices, government regulation stipulating rates charged by utilities, increased tariffs, changes in tax laws, interest and exchange rate fluctuations, liabilities for environmental damage and changes in the cost of providing specific utility services, due to its concentration in utility securities. The utility sector is also subject to potential terrorist attacks, natural disasters and severe weather conditions, as well as regulatory and operational burdens associated with the operation and maintenance of nuclear facilities. When interest rates go up, the value of securities issued by utility companies historically has gone down. Although the average dividend yield of utility sector stocks has been higher than those of other companies, the total return of utility securities has historically underperformed those of industrial companies. In most countries and localities, the utility sector is regulated by governmental entities, which can increase costs and delays for new projects and make it difficult to pass increased costs on to consumers. In certain areas, deregulation of utilities has resulted in increased competition and reduced profitability for certain companies, and increased the risk that a particular company will become bankrupt or fail completely. Reduced profitability, as well as new uses for or additional need of funds (such as for expansion, operations or stock buybacks), could result in reduced dividend payout rates for utility companies. In addition, utility companies face the risk of increases in the cost and reduced availability of fuel (such as oil, coal, natural gas or nuclear energy) and potentially high interest costs for borrowing to finance new projects. Energy conservation and changes in climate policy may also have a significant adverse impact on the revenues and expenses of utility companies.

Equity Securities Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Equity Securities Risk. MLP units and other equity securities held by the Fund can be affected by general market or economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, changes in interest rates, and the particular circumstances and performance of particular companies whose securities the Fund holds.

Cash Flow Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Cash Flow Risk. The Fund expects that a portion of the cash flow it receives will be derived from its investments in MLPs. The amount and tax characterization of cash available for distribution by an MLP depends upon the amount of cash generated by such entity’s operations. Cash available for distribution by MLPs may vary widely from quarter to quarter and will be affected by various factors affecting the entity’s operations.

Issuer Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Issuer Risk. Issuer risk is the risk that the value of a security may decline for a reason directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or service.

Management Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Management Risk. The Fund has an actively managed portfolio. The Adviser applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.

Liquidity Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Liquidity Risk. MLP common units and equity securities of MLP affiliates, including I-Shares, often trade on national securities exchanges. However, certain securities, including those of issuers with smaller capitalizations, may trade less frequently. The market movements of such securities with limited trading volumes may be more abrupt or erratic than those with higher trading volumes. As a result of the limited liquidity of such securities, the Fund could have greater difficulty selling such securities at the time and price that the Fund would like and may be limited in its ability to make alternative investments. This may also adversely affect the Fund’s ability to remit dividend payments to shareholders. The Fund may not purchase or hold securities that are illiquid or are otherwise not readily marketable if, in the aggregate, more than 15% of its net assets would be invested in illiquid securities. Illiquid securities are securities that cannot be disposed of within seven days in the ordinary course of business at approximately the value at which the Fund has valued the securities.

Fixed Income Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Fixed Income Risk. The value of fixed income securities fluctuate based on a variety of factors including interest rates, the maturity of the security, the creditworthiness of an issuer, the liquidity of the security and general bond market conditions. At times there may be an imbalance of supply and demand in the fixed income markets which could result in greater price volatility, less liquidity, wider trading spreads and a lack of price transparency.

Interest rate changes may be influenced by a number of factors, including government and central banking authority actions, inflation expectations, and supply and demand. Generally, when interest rates rise, the value of fixed income securities can be expected to decline. The longer the maturity of a fixed income security, the greater its sensitivity to interest rate changes. The Fund may be subject to heightened interest rate risk as a result of changes in economic conditions, inflation and government monetary policy, such as changes in the federal funds rate. There is no way of predicting the frequency or quantum of potential interest rate changes.

The value of fixed income securities may also be dependent on the creditworthiness of the issuer of such securities. A deterioration in the financial condition of an issuer or a deterioration in general economic conditions could cause an issuer to fail to pay principal or interest when due.

“Junk” Bond Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

“Junk” Bond Risk. Debt securities that are below investment grade, called “junk bonds,” generally offer a higher yield than is offered by higher rated securities, but are speculative, have a higher risk of default or are already in default, tend to be less liquid and are more difficult to value than higher grade securities. Junk bonds tend to be volatile and more susceptible to adverse events and negative sentiments.

Market Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Market Risk. Global economies and financial markets are increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in general financial markets, a particular financial market, or other asset classes due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. For example, the ongoing armed conflicts between Russia and Ukraine in Europe and among Israel, Hamas and other militant

groups in the Middle East have caused and may continue to cause significant market disruptions. As a result, there is significant uncertainty around how these conflicts will evolve, which may result in market volatility and may have long-lasting impacts on both the U.S. and global financial markets.

Small Capitalization Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Small Capitalization Risk. Small capitalization companies often have limited product lines, markets, distribution channels or financial resources; and the management of such companies may be dependent upon one or a few key people. The market movements of equity securities issued by MLPs with smaller capitalizations may be more abrupt or erratic than the market movements of equity securities of larger, more established companies or the stock market in general. Historically, smaller capitalization companies have sometimes gone through extended periods when they did not perform as well as larger companies. In addition, equity securities of smaller capitalization companies generally are less liquid than those of larger companies. This means that the Fund could have greater difficulty selling such securities at the time and price than the Fund would like.

Affiliated Fund Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Affiliated Fund Risk. The Fund may invest in investment companies that are advised by the Adviser or an affiliated investment adviser (“affiliated funds”). Investing in affiliated funds presents conflicts of interest. The Adviser has an incentive to invest the Fund’s assets in an affiliated fund because the Adviser or an affiliated adviser receives advisory fees from the affiliated fund. The Adviser or an affiliated adviser may also derive indirect benefits, such as increased assets under management, as a result of the Fund investing in an affiliated fund, which benefits would not be present if the Fund instead invested in an unaffiliated fund. In addition, the Adviser has an incentive to consider the effect on an affiliated fund in determining whether, and under what circumstances, to purchase or sell shares of the affiliated fund. The Adviser seeks to mitigate such conflicts by waiving and/or reimbursing its advisory fee with respect to the amount of the Fund’s net assets invested in affiliated funds.